Home / 13,507.83-18,641.19-7,539.38

Finding the Fourth Proportional to 13,507.83, 18,641.19 and 7,539.38

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Solution

The fourth proportional to 13,507.83, 18,641.19 and 7,539.38 is: 10,404.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.83 : 18,641.19 = 7,539.38 : x
  2. Step 2: Convert to fraction form
    13,507.83/18,641.19 = 7,539.38/x
  3. Step 3: Cross multiply
    13,507.83x = 18,641.19 × 7,539.38
  4. Step 4: Simplify right side
    13,507.83x = 140,542,921.86
  5. Step 5: Solve for x
    x = 140,542,921.86/13,507.83
  6. Step 6: Final answer
    x = 10,404.55

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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.