Home / 28,126.95-38,815.23-15,380.19

Finding the Fourth Proportional to 28,126.95, 38,815.23 and 15,380.19

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Solution

The fourth proportional to 28,126.95, 38,815.23 and 15,380.19 is: 21,224.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.95 : 38,815.23 = 15,380.19 : x
  2. Step 2: Convert to fraction form
    28,126.95/38,815.23 = 15,380.19/x
  3. Step 3: Cross multiply
    28,126.95x = 38,815.23 × 15,380.19
  4. Step 4: Simplify right side
    28,126.95x = 596,985,612.29
  5. Step 5: Solve for x
    x = 596,985,612.29/28,126.95
  6. Step 6: Final answer
    x = 21,224.68

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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.