Home / 28,144.95-38,841.23-15,569.70

Finding the Fourth Proportional to 28,144.95, 38,841.23 and 15,569.70

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Solution

The fourth proportional to 28,144.95, 38,841.23 and 15,569.70 is: 21,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.95 : 38,841.23 = 15,569.70 : x
  2. Step 2: Convert to fraction form
    28,144.95/38,841.23 = 15,569.70/x
  3. Step 3: Cross multiply
    28,144.95x = 38,841.23 × 15,569.70
  4. Step 4: Simplify right side
    28,144.95x = 604,746,298.73
  5. Step 5: Solve for x
    x = 604,746,298.73/28,144.95
  6. Step 6: Final answer
    x = 21,486.85

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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.