Home / 21,151.92-29,181.93-12,654.29

Finding the Fourth Proportional to 21,151.92, 29,181.93 and 12,654.29

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Solution

The fourth proportional to 21,151.92, 29,181.93 and 12,654.29 is: 17,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.92 : 29,181.93 = 12,654.29 : x
  2. Step 2: Convert to fraction form
    21,151.92/29,181.93 = 12,654.29/x
  3. Step 3: Cross multiply
    21,151.92x = 29,181.93 × 12,654.29
  4. Step 4: Simplify right side
    21,151.92x = 369,276,500.39
  5. Step 5: Solve for x
    x = 369,276,500.39/21,151.92
  6. Step 6: Final answer
    x = 17,458.30

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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.