Home / 20,957.29-28,921.26-11,397.27

Finding the Fourth Proportional to 20,957.29, 28,921.26 and 11,397.27

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Solution

The fourth proportional to 20,957.29, 28,921.26 and 11,397.27 is: 15,728.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.29 : 28,921.26 = 11,397.27 : x
  2. Step 2: Convert to fraction form
    20,957.29/28,921.26 = 11,397.27/x
  3. Step 3: Cross multiply
    20,957.29x = 28,921.26 × 11,397.27
  4. Step 4: Simplify right side
    20,957.29x = 329,623,301.31
  5. Step 5: Solve for x
    x = 329,623,301.31/20,957.29
  6. Step 6: Final answer
    x = 15,728.34

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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.