Home / 12,974.24-17,905.28-7,385.28

Finding the Fourth Proportional to 12,974.24, 17,905.28 and 7,385.28

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Solution

The fourth proportional to 12,974.24, 17,905.28 and 7,385.28 is: 10,192.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.24 : 17,905.28 = 7,385.28 : x
  2. Step 2: Convert to fraction form
    12,974.24/17,905.28 = 7,385.28/x
  3. Step 3: Cross multiply
    12,974.24x = 17,905.28 × 7,385.28
  4. Step 4: Simplify right side
    12,974.24x = 132,235,506.28
  5. Step 5: Solve for x
    x = 132,235,506.28/12,974.24
  6. Step 6: Final answer
    x = 10,192.16

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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.