Home / 21,008.52-29,001.18-12,513.48

Finding the Fourth Proportional to 21,008.52, 29,001.18 and 12,513.48

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Solution

The fourth proportional to 21,008.52, 29,001.18 and 12,513.48 is: 17,274.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.52 : 29,001.18 = 12,513.48 : x
  2. Step 2: Convert to fraction form
    21,008.52/29,001.18 = 12,513.48/x
  3. Step 3: Cross multiply
    21,008.52x = 29,001.18 × 12,513.48
  4. Step 4: Simplify right side
    21,008.52x = 362,905,685.91
  5. Step 5: Solve for x
    x = 362,905,685.91/21,008.52
  6. Step 6: Final answer
    x = 17,274.21

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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.