Home / 12,521.71-17,272.29-9,828.88

Finding the Fourth Proportional to 12,521.71, 17,272.29 and 9,828.88

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Solution

The fourth proportional to 12,521.71, 17,272.29 and 9,828.88 is: 13,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.71 : 17,272.29 = 9,828.88 : x
  2. Step 2: Convert to fraction form
    12,521.71/17,272.29 = 9,828.88/x
  3. Step 3: Cross multiply
    12,521.71x = 17,272.29 × 9,828.88
  4. Step 4: Simplify right side
    12,521.71x = 169,767,265.74
  5. Step 5: Solve for x
    x = 169,767,265.74/12,521.71
  6. Step 6: Final answer
    x = 13,557.83

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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.