Home / 21,227.47-29,294.46-12,730.97

Finding the Fourth Proportional to 21,227.47, 29,294.46 and 12,730.97

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Solution

The fourth proportional to 21,227.47, 29,294.46 and 12,730.97 is: 17,569.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.47 : 29,294.46 = 12,730.97 : x
  2. Step 2: Convert to fraction form
    21,227.47/29,294.46 = 12,730.97/x
  3. Step 3: Cross multiply
    21,227.47x = 29,294.46 × 12,730.97
  4. Step 4: Simplify right side
    21,227.47x = 372,946,964.66
  5. Step 5: Solve for x
    x = 372,946,964.66/21,227.47
  6. Step 6: Final answer
    x = 17,569.07

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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.