Home / 28,319.12-39,082.44-16,989.11

Finding the Fourth Proportional to 28,319.12, 39,082.44 and 16,989.11

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Solution

The fourth proportional to 28,319.12, 39,082.44 and 16,989.11 is: 23,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.12 : 39,082.44 = 16,989.11 : x
  2. Step 2: Convert to fraction form
    28,319.12/39,082.44 = 16,989.11/x
  3. Step 3: Cross multiply
    28,319.12x = 39,082.44 × 16,989.11
  4. Step 4: Simplify right side
    28,319.12x = 663,975,872.23
  5. Step 5: Solve for x
    x = 663,975,872.23/28,319.12
  6. Step 6: Final answer
    x = 23,446.20

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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.