Home / 21,292.02-29,397.78-14,238.90

Finding the Fourth Proportional to 21,292.02, 29,397.78 and 14,238.90

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Solution

The fourth proportional to 21,292.02, 29,397.78 and 14,238.90 is: 19,659.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.02 : 29,397.78 = 14,238.90 : x
  2. Step 2: Convert to fraction form
    21,292.02/29,397.78 = 14,238.90/x
  3. Step 3: Cross multiply
    21,292.02x = 29,397.78 × 14,238.90
  4. Step 4: Simplify right side
    21,292.02x = 418,592,049.64
  5. Step 5: Solve for x
    x = 418,592,049.64/21,292.02
  6. Step 6: Final answer
    x = 19,659.57

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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.