Home / 15,691.30-21,652.47-9,316.73

Finding the Fourth Proportional to 15,691.30, 21,652.47 and 9,316.73

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Solution

The fourth proportional to 15,691.30, 21,652.47 and 9,316.73 is: 12,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.30 : 21,652.47 = 9,316.73 : x
  2. Step 2: Convert to fraction form
    15,691.30/21,652.47 = 9,316.73/x
  3. Step 3: Cross multiply
    15,691.30x = 21,652.47 × 9,316.73
  4. Step 4: Simplify right side
    15,691.30x = 201,730,216.82
  5. Step 5: Solve for x
    x = 201,730,216.82/15,691.30
  6. Step 6: Final answer
    x = 12,856.18

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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.