Home / 12,472.40-17,215.38-7,168.92

Finding the Fourth Proportional to 12,472.40, 17,215.38 and 7,168.92

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Solution

The fourth proportional to 12,472.40, 17,215.38 and 7,168.92 is: 9,895.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.40 : 17,215.38 = 7,168.92 : x
  2. Step 2: Convert to fraction form
    12,472.40/17,215.38 = 7,168.92/x
  3. Step 3: Cross multiply
    12,472.40x = 17,215.38 × 7,168.92
  4. Step 4: Simplify right side
    12,472.40x = 123,415,681.99
  5. Step 5: Solve for x
    x = 123,415,681.99/12,472.40
  6. Step 6: Final answer
    x = 9,895.11

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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.