Home / 16,291.27-22,482.80-9,120.75

Finding the Fourth Proportional to 16,291.27, 22,482.80 and 9,120.75

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Solution

The fourth proportional to 16,291.27, 22,482.80 and 9,120.75 is: 12,587.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,291.27 : 22,482.80 = 9,120.75 : x
  2. Step 2: Convert to fraction form
    16,291.27/22,482.80 = 9,120.75/x
  3. Step 3: Cross multiply
    16,291.27x = 22,482.80 × 9,120.75
  4. Step 4: Simplify right side
    16,291.27x = 205,059,998.10
  5. Step 5: Solve for x
    x = 205,059,998.10/16,291.27
  6. Step 6: Final answer
    x = 12,587.11

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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.