Home / 12,538.95-17,289.57-7,995.57

Finding the Fourth Proportional to 12,538.95, 17,289.57 and 7,995.57

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Solution

The fourth proportional to 12,538.95, 17,289.57 and 7,995.57 is: 11,024.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.95 : 17,289.57 = 7,995.57 : x
  2. Step 2: Convert to fraction form
    12,538.95/17,289.57 = 7,995.57/x
  3. Step 3: Cross multiply
    12,538.95x = 17,289.57 × 7,995.57
  4. Step 4: Simplify right side
    12,538.95x = 138,239,967.20
  5. Step 5: Solve for x
    x = 138,239,967.20/12,538.95
  6. Step 6: Final answer
    x = 11,024.84

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Double scale
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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.