Home / 28,252.80-38,988.72-15,677.52

Finding the Fourth Proportional to 28,252.80, 38,988.72 and 15,677.52

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Solution

The fourth proportional to 28,252.80, 38,988.72 and 15,677.52 is: 21,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.80 : 38,988.72 = 15,677.52 : x
  2. Step 2: Convert to fraction form
    28,252.80/38,988.72 = 15,677.52/x
  3. Step 3: Cross multiply
    28,252.80x = 38,988.72 × 15,677.52
  4. Step 4: Simplify right side
    28,252.80x = 611,246,437.57
  5. Step 5: Solve for x
    x = 611,246,437.57/28,252.80
  6. Step 6: Final answer
    x = 21,634.90

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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.