Home / 21,141,125.70-31,711,688.55-18,537,720.90

Finding the Fourth Proportional to 21,141,125.70, 31,711,688.55 and 18,537,720.90

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Solution

The fourth proportional to 21,141,125.70, 31,711,688.55 and 18,537,720.90 is: 27,806,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141,125.70 : 31,711,688.55 = 18,537,720.90 : x
  2. Step 2: Convert to fraction form
    21,141,125.70/31,711,688.55 = 18,537,720.90/x
  3. Step 3: Cross multiply
    21,141,125.70x = 31,711,688.55 × 18,537,720.90
  4. Step 4: Simplify right side
    21,141,125.70x = 587,862,431,607,625.62
  5. Step 5: Solve for x
    x = 587,862,431,607,625.62/21,141,125.70
  6. Step 6: Final answer
    x = 27,806,581.35

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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.