Home / 12,538.45-17,288.88-7,995.07

Finding the Fourth Proportional to 12,538.45, 17,288.88 and 7,995.07

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Solution

The fourth proportional to 12,538.45, 17,288.88 and 7,995.07 is: 11,024.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.45 : 17,288.88 = 7,995.07 : x
  2. Step 2: Convert to fraction form
    12,538.45/17,288.88 = 7,995.07/x
  3. Step 3: Cross multiply
    12,538.45x = 17,288.88 × 7,995.07
  4. Step 4: Simplify right side
    12,538.45x = 138,225,805.82
  5. Step 5: Solve for x
    x = 138,225,805.82/12,538.45
  6. Step 6: Final answer
    x = 11,024.15

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Half scale
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Double scale
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Similar ratio
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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.