Home / 28,175.74-38,841.12-21,449.65

Finding the Fourth Proportional to 28,175.74, 38,841.12 and 21,449.65

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Solution

The fourth proportional to 28,175.74, 38,841.12 and 21,449.65 is: 29,569.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.74 : 38,841.12 = 21,449.65 : x
  2. Step 2: Convert to fraction form
    28,175.74/38,841.12 = 21,449.65/x
  3. Step 3: Cross multiply
    28,175.74x = 38,841.12 × 21,449.65
  4. Step 4: Simplify right side
    28,175.74x = 833,128,429.61
  5. Step 5: Solve for x
    x = 833,128,429.61/28,175.74
  6. Step 6: Final answer
    x = 29,569.00

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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.