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Finding the Fourth Proportional to 20,535.65, 30,803.47 and 8,061.55

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Solution

The fourth proportional to 20,535.65, 30,803.47 and 8,061.55 is: 12,092.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.65 : 30,803.47 = 8,061.55 : x
  2. Step 2: Convert to fraction form
    20,535.65/30,803.47 = 8,061.55/x
  3. Step 3: Cross multiply
    20,535.65x = 30,803.47 × 8,061.55
  4. Step 4: Simplify right side
    20,535.65x = 248,323,616.42
  5. Step 5: Solve for x
    x = 248,323,616.42/20,535.65
  6. Step 6: Final answer
    x = 12,092.32

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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.