Home / 15,326.20-21,148.86-8,611.30

Finding the Fourth Proportional to 15,326.20, 21,148.86 and 8,611.30

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Solution

The fourth proportional to 15,326.20, 21,148.86 and 8,611.30 is: 11,882.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.20 : 21,148.86 = 8,611.30 : x
  2. Step 2: Convert to fraction form
    15,326.20/21,148.86 = 8,611.30/x
  3. Step 3: Cross multiply
    15,326.20x = 21,148.86 × 8,611.30
  4. Step 4: Simplify right side
    15,326.20x = 182,119,178.12
  5. Step 5: Solve for x
    x = 182,119,178.12/15,326.20
  6. Step 6: Final answer
    x = 11,882.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.