Home / 11,507.70-15,881.21-6,472.74

Finding the Fourth Proportional to 11,507.70, 15,881.21 and 6,472.74

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Solution

The fourth proportional to 11,507.70, 15,881.21 and 6,472.74 is: 8,932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,507.70 : 15,881.21 = 6,472.74 : x
  2. Step 2: Convert to fraction form
    11,507.70/15,881.21 = 6,472.74/x
  3. Step 3: Cross multiply
    11,507.70x = 15,881.21 × 6,472.74
  4. Step 4: Simplify right side
    11,507.70x = 102,794,943.22
  5. Step 5: Solve for x
    x = 102,794,943.22/11,507.70
  6. Step 6: Final answer
    x = 8,932.71

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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.