Home / 18,937.20-26,135.28-11,385.99

Finding the Fourth Proportional to 18,937.20, 26,135.28 and 11,385.99

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Solution

The fourth proportional to 18,937.20, 26,135.28 and 11,385.99 is: 15,713.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.20 : 26,135.28 = 11,385.99 : x
  2. Step 2: Convert to fraction form
    18,937.20/26,135.28 = 11,385.99/x
  3. Step 3: Cross multiply
    18,937.20x = 26,135.28 × 11,385.99
  4. Step 4: Simplify right side
    18,937.20x = 297,576,036.73
  5. Step 5: Solve for x
    x = 297,576,036.73/18,937.20
  6. Step 6: Final answer
    x = 15,713.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.