Home / 20,781,683.60-31,119,381.30-15,360,985.40

Finding the Fourth Proportional to 20,781,683.60, 31,119,381.30 and 15,360,985.40

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Solution

The fourth proportional to 20,781,683.60, 31,119,381.30 and 15,360,985.40 is: 23,002,196.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,683.60 : 31,119,381.30 = 15,360,985.40 : x
  2. Step 2: Convert to fraction form
    20,781,683.60/31,119,381.30 = 15,360,985.40/x
  3. Step 3: Cross multiply
    20,781,683.60x = 31,119,381.30 × 15,360,985.40
  4. Step 4: Simplify right side
    20,781,683.60x = 478,024,361,806,333.06
  5. Step 5: Solve for x
    x = 478,024,361,806,333.06/20,781,683.60
  6. Step 6: Final answer
    x = 23,002,196.12

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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.