Home / 15,461.88-21,337.38-8,388.30

Finding the Fourth Proportional to 15,461.88, 21,337.38 and 8,388.30

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Solution

The fourth proportional to 15,461.88, 21,337.38 and 8,388.30 is: 11,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.88 : 21,337.38 = 8,388.30 : x
  2. Step 2: Convert to fraction form
    15,461.88/21,337.38 = 8,388.30/x
  3. Step 3: Cross multiply
    15,461.88x = 21,337.38 × 8,388.30
  4. Step 4: Simplify right side
    15,461.88x = 178,984,344.65
  5. Step 5: Solve for x
    x = 178,984,344.65/15,461.88
  6. Step 6: Final answer
    x = 11,575.85

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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.