Home / 12,865.65-17,754.49-7,200.92

Finding the Fourth Proportional to 12,865.65, 17,754.49 and 7,200.92

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Solution

The fourth proportional to 12,865.65, 17,754.49 and 7,200.92 is: 9,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.65 : 17,754.49 = 7,200.92 : x
  2. Step 2: Convert to fraction form
    12,865.65/17,754.49 = 7,200.92/x
  3. Step 3: Cross multiply
    12,865.65x = 17,754.49 × 7,200.92
  4. Step 4: Simplify right side
    12,865.65x = 127,848,685.17
  5. Step 5: Solve for x
    x = 127,848,685.17/12,865.65
  6. Step 6: Final answer
    x = 9,937.21

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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.