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Finding the Fourth Proportional to 15,171, 20,925.69 and 9,856.32

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Solution

The fourth proportional to 15,171, 20,925.69 and 9,856.32 is: 13,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171 : 20,925.69 = 9,856.32 : x
  2. Step 2: Convert to fraction form
    15,171/20,925.69 = 9,856.32/x
  3. Step 3: Cross multiply
    15,171x = 20,925.69 × 9,856.32
  4. Step 4: Simplify right side
    15,171x = 206,250,296.86
  5. Step 5: Solve for x
    x = 206,250,296.86/15,171
  6. Step 6: Final answer
    x = 13,595.04

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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.