Home / 13,451.55-18,565.46-8,417.81

Finding the Fourth Proportional to 13,451.55, 18,565.46 and 8,417.81

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Solution

The fourth proportional to 13,451.55, 18,565.46 and 8,417.81 is: 11,618.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.55 : 18,565.46 = 8,417.81 : x
  2. Step 2: Convert to fraction form
    13,451.55/18,565.46 = 8,417.81/x
  3. Step 3: Cross multiply
    13,451.55x = 18,565.46 × 8,417.81
  4. Step 4: Simplify right side
    13,451.55x = 156,280,379.93
  5. Step 5: Solve for x
    x = 156,280,379.93/13,451.55
  6. Step 6: Final answer
    x = 11,618.02

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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.