Home / 28,319.04-39,082.32-15,745.68

Finding the Fourth Proportional to 28,319.04, 39,082.32 and 15,745.68

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Solution

The fourth proportional to 28,319.04, 39,082.32 and 15,745.68 is: 21,730.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.04 : 39,082.32 = 15,745.68 : x
  2. Step 2: Convert to fraction form
    28,319.04/39,082.32 = 15,745.68/x
  3. Step 3: Cross multiply
    28,319.04x = 39,082.32 × 15,745.68
  4. Step 4: Simplify right side
    28,319.04x = 615,377,704.38
  5. Step 5: Solve for x
    x = 615,377,704.38/28,319.04
  6. Step 6: Final answer
    x = 21,730.18

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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.