Home / 15,768.95-21,761.45-8,598.78

Finding the Fourth Proportional to 15,768.95, 21,761.45 and 8,598.78

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Solution

The fourth proportional to 15,768.95, 21,761.45 and 8,598.78 is: 11,866.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.95 : 21,761.45 = 8,598.78 : x
  2. Step 2: Convert to fraction form
    15,768.95/21,761.45 = 8,598.78/x
  3. Step 3: Cross multiply
    15,768.95x = 21,761.45 × 8,598.78
  4. Step 4: Simplify right side
    15,768.95x = 187,121,959.39
  5. Step 5: Solve for x
    x = 187,121,959.39/15,768.95
  6. Step 6: Final answer
    x = 11,866.48

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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.