Home / 28,116.97-38,801.78-15,369.95

Finding the Fourth Proportional to 28,116.97, 38,801.78 and 15,369.95

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Solution

The fourth proportional to 28,116.97, 38,801.78 and 15,369.95 is: 21,210.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.97 : 38,801.78 = 15,369.95 : x
  2. Step 2: Convert to fraction form
    28,116.97/38,801.78 = 15,369.95/x
  3. Step 3: Cross multiply
    28,116.97x = 38,801.78 × 15,369.95
  4. Step 4: Simplify right side
    28,116.97x = 596,381,582.76
  5. Step 5: Solve for x
    x = 596,381,582.76/28,116.97
  6. Step 6: Final answer
    x = 21,210.73

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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.