Home / 20,221.76-30,330.56-6,368.32

Finding the Fourth Proportional to 20,221.76, 30,330.56 and 6,368.32

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Solution

The fourth proportional to 20,221.76, 30,330.56 and 6,368.32 is: 9,551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.76 : 30,330.56 = 6,368.32 : x
  2. Step 2: Convert to fraction form
    20,221.76/30,330.56 = 6,368.32/x
  3. Step 3: Cross multiply
    20,221.76x = 30,330.56 × 6,368.32
  4. Step 4: Simplify right side
    20,221.76x = 193,154,711.86
  5. Step 5: Solve for x
    x = 193,154,711.86/20,221.76
  6. Step 6: Final answer
    x = 9,551.82

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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.