Home / 39,999.71-59,979.42-13,336.25

Finding the Fourth Proportional to 39,999.71, 59,979.42 and 13,336.25

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Solution

The fourth proportional to 39,999.71, 59,979.42 and 13,336.25 is: 19,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,999.71 : 59,979.42 = 13,336.25 : x
  2. Step 2: Convert to fraction form
    39,999.71/59,979.42 = 13,336.25/x
  3. Step 3: Cross multiply
    39,999.71x = 59,979.42 × 13,336.25
  4. Step 4: Simplify right side
    39,999.71x = 799,900,240.08
  5. Step 5: Solve for x
    x = 799,900,240.08/39,999.71
  6. Step 6: Final answer
    x = 19,997.65

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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.