Home / 12,313,044.90-18,469,567.35-7,778,081.70

Finding the Fourth Proportional to 12,313,044.90, 18,469,567.35 and 7,778,081.70

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Solution

The fourth proportional to 12,313,044.90, 18,469,567.35 and 7,778,081.70 is: 11,667,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313,044.90 : 18,469,567.35 = 7,778,081.70 : x
  2. Step 2: Convert to fraction form
    12,313,044.90/18,469,567.35 = 7,778,081.70/x
  3. Step 3: Cross multiply
    12,313,044.90x = 18,469,567.35 × 7,778,081.70
  4. Step 4: Simplify right side
    12,313,044.90x = 143,657,803,811,952.50
  5. Step 5: Solve for x
    x = 143,657,803,811,952.50/12,313,044.90
  6. Step 6: Final answer
    x = 11,667,122.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.