Home / 15,576.38-21,495.37-8,502.78

Finding the Fourth Proportional to 15,576.38, 21,495.37 and 8,502.78

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Solution

The fourth proportional to 15,576.38, 21,495.37 and 8,502.78 is: 11,733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,576.38 : 21,495.37 = 8,502.78 : x
  2. Step 2: Convert to fraction form
    15,576.38/21,495.37 = 8,502.78/x
  3. Step 3: Cross multiply
    15,576.38x = 21,495.37 × 8,502.78
  4. Step 4: Simplify right side
    15,576.38x = 182,770,402.13
  5. Step 5: Solve for x
    x = 182,770,402.13/15,576.38
  6. Step 6: Final answer
    x = 11,733.82

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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.