Home / 20,376.39-30,575.12-8,686.47

Finding the Fourth Proportional to 20,376.39, 30,575.12 and 8,686.47

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Solution

The fourth proportional to 20,376.39, 30,575.12 and 8,686.47 is: 13,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.39 : 30,575.12 = 8,686.47 : x
  2. Step 2: Convert to fraction form
    20,376.39/30,575.12 = 8,686.47/x
  3. Step 3: Cross multiply
    20,376.39x = 30,575.12 × 8,686.47
  4. Step 4: Simplify right side
    20,376.39x = 265,589,862.63
  5. Step 5: Solve for x
    x = 265,589,862.63/20,376.39
  6. Step 6: Final answer
    x = 13,034.20

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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.