Home / 39,721.26-59,580-13,427.04

Finding the Fourth Proportional to 39,721.26, 59,580 and 13,427.04

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Solution

The fourth proportional to 39,721.26, 59,580 and 13,427.04 is: 20,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,721.26 : 59,580 = 13,427.04 : x
  2. Step 2: Convert to fraction form
    39,721.26/59,580 = 13,427.04/x
  3. Step 3: Cross multiply
    39,721.26x = 59,580 × 13,427.04
  4. Step 4: Simplify right side
    39,721.26x = 799,983,043.20
  5. Step 5: Solve for x
    x = 799,983,043.20/39,721.26
  6. Step 6: Final answer
    x = 20,139.92

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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.