Home / 13,720.25-18,934.08-7,432.76

Finding the Fourth Proportional to 13,720.25, 18,934.08 and 7,432.76

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Solution

The fourth proportional to 13,720.25, 18,934.08 and 7,432.76 is: 10,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.25 : 18,934.08 = 7,432.76 : x
  2. Step 2: Convert to fraction form
    13,720.25/18,934.08 = 7,432.76/x
  3. Step 3: Cross multiply
    13,720.25x = 18,934.08 × 7,432.76
  4. Step 4: Simplify right side
    13,720.25x = 140,732,472.46
  5. Step 5: Solve for x
    x = 140,732,472.46/13,720.25
  6. Step 6: Final answer
    x = 10,257.28

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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.