Home / 20,258.40-27,957.78-11,306.28

Finding the Fourth Proportional to 20,258.40, 27,957.78 and 11,306.28

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Solution

The fourth proportional to 20,258.40, 27,957.78 and 11,306.28 is: 15,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.40 : 27,957.78 = 11,306.28 : x
  2. Step 2: Convert to fraction form
    20,258.40/27,957.78 = 11,306.28/x
  3. Step 3: Cross multiply
    20,258.40x = 27,957.78 × 11,306.28
  4. Step 4: Simplify right side
    20,258.40x = 316,098,488.86
  5. Step 5: Solve for x
    x = 316,098,488.86/20,258.40
  6. Step 6: Final answer
    x = 15,603.33

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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.