Home / 28,082.40-38,753.28-15,507.84

Finding the Fourth Proportional to 28,082.40, 38,753.28 and 15,507.84

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Solution

The fourth proportional to 28,082.40, 38,753.28 and 15,507.84 is: 21,400.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.40 : 38,753.28 = 15,507.84 : x
  2. Step 2: Convert to fraction form
    28,082.40/38,753.28 = 15,507.84/x
  3. Step 3: Cross multiply
    28,082.40x = 38,753.28 × 15,507.84
  4. Step 4: Simplify right side
    28,082.40x = 600,979,665.72
  5. Step 5: Solve for x
    x = 600,979,665.72/28,082.40
  6. Step 6: Final answer
    x = 21,400.58

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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.