Home / 21,042.72-29,041.20-11,612.16

Finding the Fourth Proportional to 21,042.72, 29,041.20 and 11,612.16

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Solution

The fourth proportional to 21,042.72, 29,041.20 and 11,612.16 is: 16,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.72 : 29,041.20 = 11,612.16 : x
  2. Step 2: Convert to fraction form
    21,042.72/29,041.20 = 11,612.16/x
  3. Step 3: Cross multiply
    21,042.72x = 29,041.20 × 11,612.16
  4. Step 4: Simplify right side
    21,042.72x = 337,231,060.99
  5. Step 5: Solve for x
    x = 337,231,060.99/21,042.72
  6. Step 6: Final answer
    x = 16,026.02

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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.