Home / 20,477.43-28,258.41-11,402.73

Finding the Fourth Proportional to 20,477.43, 28,258.41 and 11,402.73

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Solution

The fourth proportional to 20,477.43, 28,258.41 and 11,402.73 is: 15,735.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.43 : 28,258.41 = 11,402.73 : x
  2. Step 2: Convert to fraction form
    20,477.43/28,258.41 = 11,402.73/x
  3. Step 3: Cross multiply
    20,477.43x = 28,258.41 × 11,402.73
  4. Step 4: Simplify right side
    20,477.43x = 322,223,019.46
  5. Step 5: Solve for x
    x = 322,223,019.46/20,477.43
  6. Step 6: Final answer
    x = 15,735.52

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Half scale
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Double scale
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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.