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Finding the Fourth Proportional to 20,356.61, 30,534.94 and 5,565.65

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Solution

The fourth proportional to 20,356.61, 30,534.94 and 5,565.65 is: 8,348.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.61 : 30,534.94 = 5,565.65 : x
  2. Step 2: Convert to fraction form
    20,356.61/30,534.94 = 5,565.65/x
  3. Step 3: Cross multiply
    20,356.61x = 30,534.94 × 5,565.65
  4. Step 4: Simplify right side
    20,356.61x = 169,946,851.23
  5. Step 5: Solve for x
    x = 169,946,851.23/20,356.61
  6. Step 6: Final answer
    x = 8,348.49

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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.