Home / 13,508.09-18,641.13-7,539.70

Finding the Fourth Proportional to 13,508.09, 18,641.13 and 7,539.70

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Solution

The fourth proportional to 13,508.09, 18,641.13 and 7,539.70 is: 10,404.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.09 : 18,641.13 = 7,539.70 : x
  2. Step 2: Convert to fraction form
    13,508.09/18,641.13 = 7,539.70/x
  3. Step 3: Cross multiply
    13,508.09x = 18,641.13 × 7,539.70
  4. Step 4: Simplify right side
    13,508.09x = 140,548,527.86
  5. Step 5: Solve for x
    x = 140,548,527.86/13,508.09
  6. Step 6: Final answer
    x = 10,404.77

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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.