Home / 15,897.20-23,789.10-13,839.80

Finding the Fourth Proportional to 15,897.20, 23,789.10 and 13,839.80

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Solution

The fourth proportional to 15,897.20, 23,789.10 and 13,839.80 is: 20,710.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.20 : 23,789.10 = 13,839.80 : x
  2. Step 2: Convert to fraction form
    15,897.20/23,789.10 = 13,839.80/x
  3. Step 3: Cross multiply
    15,897.20x = 23,789.10 × 13,839.80
  4. Step 4: Simplify right side
    15,897.20x = 329,236,386.18
  5. Step 5: Solve for x
    x = 329,236,386.18/15,897.20
  6. Step 6: Final answer
    x = 20,710.34

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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.