Home / 18,071.39-27,123.28-15,128.25

Finding the Fourth Proportional to 18,071.39, 27,123.28 and 15,128.25

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Solution

The fourth proportional to 18,071.39, 27,123.28 and 15,128.25 is: 22,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,071.39 : 27,123.28 = 15,128.25 : x
  2. Step 2: Convert to fraction form
    18,071.39/27,123.28 = 15,128.25/x
  3. Step 3: Cross multiply
    18,071.39x = 27,123.28 × 15,128.25
  4. Step 4: Simplify right side
    18,071.39x = 410,327,685.02
  5. Step 5: Solve for x
    x = 410,327,685.02/18,071.39
  6. Step 6: Final answer
    x = 22,705.93

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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.