Home / 14,014,778.70-21,022,168.05-12,420,455.70

Finding the Fourth Proportional to 14,014,778.70, 21,022,168.05 and 12,420,455.70

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Solution

The fourth proportional to 14,014,778.70, 21,022,168.05 and 12,420,455.70 is: 18,630,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,014,778.70 : 21,022,168.05 = 12,420,455.70 : x
  2. Step 2: Convert to fraction form
    14,014,778.70/21,022,168.05 = 12,420,455.70/x
  3. Step 3: Cross multiply
    14,014,778.70x = 21,022,168.05 × 12,420,455.70
  4. Step 4: Simplify right side
    14,014,778.70x = 261,104,906,982,980.38
  5. Step 5: Solve for x
    x = 261,104,906,982,980.38/14,014,778.70
  6. Step 6: Final answer
    x = 18,630,683.55

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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.