Home / 39,905.28-59,839.52-11,815.28

Finding the Fourth Proportional to 39,905.28, 59,839.52 and 11,815.28

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Solution

The fourth proportional to 39,905.28, 59,839.52 and 11,815.28 is: 17,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905.28 : 59,839.52 = 11,815.28 : x
  2. Step 2: Convert to fraction form
    39,905.28/59,839.52 = 11,815.28/x
  3. Step 3: Cross multiply
    39,905.28x = 59,839.52 × 11,815.28
  4. Step 4: Simplify right side
    39,905.28x = 707,020,683.87
  5. Step 5: Solve for x
    x = 707,020,683.87/39,905.28
  6. Step 6: Final answer
    x = 17,717.47

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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.