Home / 15,425.46-21,287.16-8,351.91

Finding the Fourth Proportional to 15,425.46, 21,287.16 and 8,351.91

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Solution

The fourth proportional to 15,425.46, 21,287.16 and 8,351.91 is: 11,525.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.46 : 21,287.16 = 8,351.91 : x
  2. Step 2: Convert to fraction form
    15,425.46/21,287.16 = 8,351.91/x
  3. Step 3: Cross multiply
    15,425.46x = 21,287.16 × 8,351.91
  4. Step 4: Simplify right side
    15,425.46x = 177,788,444.48
  5. Step 5: Solve for x
    x = 177,788,444.48/15,425.46
  6. Step 6: Final answer
    x = 11,525.65

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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.