Home / 20,148.32-30,191.69-8,455.16

Finding the Fourth Proportional to 20,148.32, 30,191.69 and 8,455.16

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Solution

The fourth proportional to 20,148.32, 30,191.69 and 8,455.16 is: 12,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.32 : 30,191.69 = 8,455.16 : x
  2. Step 2: Convert to fraction form
    20,148.32/30,191.69 = 8,455.16/x
  3. Step 3: Cross multiply
    20,148.32x = 30,191.69 × 8,455.16
  4. Step 4: Simplify right side
    20,148.32x = 255,275,569.62
  5. Step 5: Solve for x
    x = 255,275,569.62/20,148.32
  6. Step 6: Final answer
    x = 12,669.82

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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.