Home / 39,990.61-59,979.76-13,337.07

Finding the Fourth Proportional to 39,990.61, 59,979.76 and 13,337.07

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Solution

The fourth proportional to 39,990.61, 59,979.76 and 13,337.07 is: 20,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.61 : 59,979.76 = 13,337.07 : x
  2. Step 2: Convert to fraction form
    39,990.61/59,979.76 = 13,337.07/x
  3. Step 3: Cross multiply
    39,990.61x = 59,979.76 × 13,337.07
  4. Step 4: Simplify right side
    39,990.61x = 799,954,257.70
  5. Step 5: Solve for x
    x = 799,954,257.70/39,990.61
  6. Step 6: Final answer
    x = 20,003.55

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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.