Home / 20,375.16-30,565.98-8,688.48

Finding the Fourth Proportional to 20,375.16, 30,565.98 and 8,688.48

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Solution

The fourth proportional to 20,375.16, 30,565.98 and 8,688.48 is: 13,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.16 : 30,565.98 = 8,688.48 : x
  2. Step 2: Convert to fraction form
    20,375.16/30,565.98 = 8,688.48/x
  3. Step 3: Cross multiply
    20,375.16x = 30,565.98 × 8,688.48
  4. Step 4: Simplify right side
    20,375.16x = 265,571,905.91
  5. Step 5: Solve for x
    x = 265,571,905.91/20,375.16
  6. Step 6: Final answer
    x = 13,034.10

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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.