Home / 21,449.95-32,139.35-15,178.87

Finding the Fourth Proportional to 21,449.95, 32,139.35 and 15,178.87

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Solution

The fourth proportional to 21,449.95, 32,139.35 and 15,178.87 is: 22,743.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.95 : 32,139.35 = 15,178.87 : x
  2. Step 2: Convert to fraction form
    21,449.95/32,139.35 = 15,178.87/x
  3. Step 3: Cross multiply
    21,449.95x = 32,139.35 × 15,178.87
  4. Step 4: Simplify right side
    21,449.95x = 487,839,015.53
  5. Step 5: Solve for x
    x = 487,839,015.53/21,449.95
  6. Step 6: Final answer
    x = 22,743.13

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1.5x scale

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.