Home / 21,251.12-29,323.28-12,175.04

Finding the Fourth Proportional to 21,251.12, 29,323.28 and 12,175.04

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Solution

The fourth proportional to 21,251.12, 29,323.28 and 12,175.04 is: 16,799.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.12 : 29,323.28 = 12,175.04 : x
  2. Step 2: Convert to fraction form
    21,251.12/29,323.28 = 12,175.04/x
  3. Step 3: Cross multiply
    21,251.12x = 29,323.28 × 12,175.04
  4. Step 4: Simplify right side
    21,251.12x = 357,012,106.93
  5. Step 5: Solve for x
    x = 357,012,106.93/21,251.12
  6. Step 6: Final answer
    x = 16,799.68

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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.