Home / 12,502,429.60-18,759,865.20-7,115,216.80

Finding the Fourth Proportional to 12,502,429.60, 18,759,865.20 and 7,115,216.80

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Solution

The fourth proportional to 12,502,429.60, 18,759,865.20 and 7,115,216.80 is: 10,676,365.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,502,429.60 : 18,759,865.20 = 7,115,216.80 : x
  2. Step 2: Convert to fraction form
    12,502,429.60/18,759,865.20 = 7,115,216.80/x
  3. Step 3: Cross multiply
    12,502,429.60x = 18,759,865.20 × 7,115,216.80
  4. Step 4: Simplify right side
    12,502,429.60x = 133,480,508,036,775.34
  5. Step 5: Solve for x
    x = 133,480,508,036,775.34/12,502,429.60
  6. Step 6: Final answer
    x = 10,676,365.50

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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.