Home / 39,792.50-59,688.81-13,139.97

Finding the Fourth Proportional to 39,792.50, 59,688.81 and 13,139.97

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Solution

The fourth proportional to 39,792.50, 59,688.81 and 13,139.97 is: 19,709.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,792.50 : 59,688.81 = 13,139.97 : x
  2. Step 2: Convert to fraction form
    39,792.50/59,688.81 = 13,139.97/x
  3. Step 3: Cross multiply
    39,792.50x = 59,688.81 × 13,139.97
  4. Step 4: Simplify right side
    39,792.50x = 784,309,172.74
  5. Step 5: Solve for x
    x = 784,309,172.74/39,792.50
  6. Step 6: Final answer
    x = 19,709.98

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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.