Home / 13,123.57-18,110.49-7,155.24

Finding the Fourth Proportional to 13,123.57, 18,110.49 and 7,155.24

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Solution

The fourth proportional to 13,123.57, 18,110.49 and 7,155.24 is: 9,874.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.57 : 18,110.49 = 7,155.24 : x
  2. Step 2: Convert to fraction form
    13,123.57/18,110.49 = 7,155.24/x
  3. Step 3: Cross multiply
    13,123.57x = 18,110.49 × 7,155.24
  4. Step 4: Simplify right side
    13,123.57x = 129,584,902.47
  5. Step 5: Solve for x
    x = 129,584,902.47/13,123.57
  6. Step 6: Final answer
    x = 9,874.21

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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.