Home / 28,613.24-42,932.10-11,977.16

Finding the Fourth Proportional to 28,613.24, 42,932.10 and 11,977.16

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Solution

The fourth proportional to 28,613.24, 42,932.10 and 11,977.16 is: 17,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.24 : 42,932.10 = 11,977.16 : x
  2. Step 2: Convert to fraction form
    28,613.24/42,932.10 = 11,977.16/x
  3. Step 3: Cross multiply
    28,613.24x = 42,932.10 × 11,977.16
  4. Step 4: Simplify right side
    28,613.24x = 514,204,630.84
  5. Step 5: Solve for x
    x = 514,204,630.84/28,613.24
  6. Step 6: Final answer
    x = 17,970.86

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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.