Home / 12,631.20-17,431.02-7,329.12

Finding the Fourth Proportional to 12,631.20, 17,431.02 and 7,329.12

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Solution

The fourth proportional to 12,631.20, 17,431.02 and 7,329.12 is: 10,114.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.20 : 17,431.02 = 7,329.12 : x
  2. Step 2: Convert to fraction form
    12,631.20/17,431.02 = 7,329.12/x
  3. Step 3: Cross multiply
    12,631.20x = 17,431.02 × 7,329.12
  4. Step 4: Simplify right side
    12,631.20x = 127,754,037.30
  5. Step 5: Solve for x
    x = 127,754,037.30/12,631.20
  6. Step 6: Final answer
    x = 10,114.16

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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.