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Finding the Fourth Proportional to 28,082.64, 38,754.06 and 15,507.39

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Solution

The fourth proportional to 28,082.64, 38,754.06 and 15,507.39 is: 21,400.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.64 : 38,754.06 = 15,507.39 : x
  2. Step 2: Convert to fraction form
    28,082.64/38,754.06 = 15,507.39/x
  3. Step 3: Cross multiply
    28,082.64x = 38,754.06 × 15,507.39
  4. Step 4: Simplify right side
    28,082.64x = 600,974,322.50
  5. Step 5: Solve for x
    x = 600,974,322.50/28,082.64
  6. Step 6: Final answer
    x = 21,400.21

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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.