Home / 28,116.88-42,154.47-17,020.95

Finding the Fourth Proportional to 28,116.88, 42,154.47 and 17,020.95

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Solution

The fourth proportional to 28,116.88, 42,154.47 and 17,020.95 is: 25,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.88 : 42,154.47 = 17,020.95 : x
  2. Step 2: Convert to fraction form
    28,116.88/42,154.47 = 17,020.95/x
  3. Step 3: Cross multiply
    28,116.88x = 42,154.47 × 17,020.95
  4. Step 4: Simplify right side
    28,116.88x = 717,509,126.15
  5. Step 5: Solve for x
    x = 717,509,126.15/28,116.88
  6. Step 6: Final answer
    x = 25,518.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.