Home / 18,140.68-25,036.89-11,071.21

Finding the Fourth Proportional to 18,140.68, 25,036.89 and 11,071.21

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Solution

The fourth proportional to 18,140.68, 25,036.89 and 11,071.21 is: 15,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.68 : 25,036.89 = 11,071.21 : x
  2. Step 2: Convert to fraction form
    18,140.68/25,036.89 = 11,071.21/x
  3. Step 3: Cross multiply
    18,140.68x = 25,036.89 × 11,071.21
  4. Step 4: Simplify right side
    18,140.68x = 277,188,666.94
  5. Step 5: Solve for x
    x = 277,188,666.94/18,140.68
  6. Step 6: Final answer
    x = 15,279.95

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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.