Home / 18,140.45-27,221.05-7,045.70

Finding the Fourth Proportional to 18,140.45, 27,221.05 and 7,045.70

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Solution

The fourth proportional to 18,140.45, 27,221.05 and 7,045.70 is: 10,572.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.45 : 27,221.05 = 7,045.70 : x
  2. Step 2: Convert to fraction form
    18,140.45/27,221.05 = 7,045.70/x
  3. Step 3: Cross multiply
    18,140.45x = 27,221.05 × 7,045.70
  4. Step 4: Simplify right side
    18,140.45x = 191,791,397.62
  5. Step 5: Solve for x
    x = 191,791,397.62/18,140.45
  6. Step 6: Final answer
    x = 10,572.58

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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.