Home / 20,436.76-30,657.12-7,957.81

Finding the Fourth Proportional to 20,436.76, 30,657.12 and 7,957.81

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Solution

The fourth proportional to 20,436.76, 30,657.12 and 7,957.81 is: 11,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.76 : 30,657.12 = 7,957.81 : x
  2. Step 2: Convert to fraction form
    20,436.76/30,657.12 = 7,957.81/x
  3. Step 3: Cross multiply
    20,436.76x = 30,657.12 × 7,957.81
  4. Step 4: Simplify right side
    20,436.76x = 243,963,536.11
  5. Step 5: Solve for x
    x = 243,963,536.11/20,436.76
  6. Step 6: Final answer
    x = 11,937.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.