Home / 15,456.27-21,332.85-8,742.18

Finding the Fourth Proportional to 15,456.27, 21,332.85 and 8,742.18

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Solution

The fourth proportional to 15,456.27, 21,332.85 and 8,742.18 is: 12,066.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.27 : 21,332.85 = 8,742.18 : x
  2. Step 2: Convert to fraction form
    15,456.27/21,332.85 = 8,742.18/x
  3. Step 3: Cross multiply
    15,456.27x = 21,332.85 × 8,742.18
  4. Step 4: Simplify right side
    15,456.27x = 186,495,667.95
  5. Step 5: Solve for x
    x = 186,495,667.95/15,456.27
  6. Step 6: Final answer
    x = 12,066.02

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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.