Home / 15,475.70-21,356.94-8,761.20

Finding the Fourth Proportional to 15,475.70, 21,356.94 and 8,761.20

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Solution

The fourth proportional to 15,475.70, 21,356.94 and 8,761.20 is: 12,090.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.70 : 21,356.94 = 8,761.20 : x
  2. Step 2: Convert to fraction form
    15,475.70/21,356.94 = 8,761.20/x
  3. Step 3: Cross multiply
    15,475.70x = 21,356.94 × 8,761.20
  4. Step 4: Simplify right side
    15,475.70x = 187,112,422.73
  5. Step 5: Solve for x
    x = 187,112,422.73/15,475.70
  6. Step 6: Final answer
    x = 12,090.72

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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.