Home / 39,988.62-59,983.92-10,407.78

Finding the Fourth Proportional to 39,988.62, 59,983.92 and 10,407.78

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Solution

The fourth proportional to 39,988.62, 59,983.92 and 10,407.78 is: 15,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988.62 : 59,983.92 = 10,407.78 : x
  2. Step 2: Convert to fraction form
    39,988.62/59,983.92 = 10,407.78/x
  3. Step 3: Cross multiply
    39,988.62x = 59,983.92 × 10,407.78
  4. Step 4: Simplify right side
    39,988.62x = 624,299,442.90
  5. Step 5: Solve for x
    x = 624,299,442.90/39,988.62
  6. Step 6: Final answer
    x = 15,611.93

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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.