Home / 13,123.38-18,142.66-12,572.58

Finding the Fourth Proportional to 13,123.38, 18,142.66 and 12,572.58

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Solution

The fourth proportional to 13,123.38, 18,142.66 and 12,572.58 is: 17,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.38 : 18,142.66 = 12,572.58 : x
  2. Step 2: Convert to fraction form
    13,123.38/18,142.66 = 12,572.58/x
  3. Step 3: Cross multiply
    13,123.38x = 18,142.66 × 12,572.58
  4. Step 4: Simplify right side
    13,123.38x = 228,100,044.26
  5. Step 5: Solve for x
    x = 228,100,044.26/13,123.38
  6. Step 6: Final answer
    x = 17,381.20

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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.