Home / 9,111.60-13,646.21-8,862.39

Finding the Fourth Proportional to 9,111.60, 13,646.21 and 8,862.39

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Solution

The fourth proportional to 9,111.60, 13,646.21 and 8,862.39 is: 13,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.60 : 13,646.21 = 8,862.39 : x
  2. Step 2: Convert to fraction form
    9,111.60/13,646.21 = 8,862.39/x
  3. Step 3: Cross multiply
    9,111.60x = 13,646.21 × 8,862.39
  4. Step 4: Simplify right side
    9,111.60x = 120,937,990.73
  5. Step 5: Solve for x
    x = 120,937,990.73/9,111.60
  6. Step 6: Final answer
    x = 13,272.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.