Home / 15,769.38-21,761.34-8,695.35

Finding the Fourth Proportional to 15,769.38, 21,761.34 and 8,695.35

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Solution

The fourth proportional to 15,769.38, 21,761.34 and 8,695.35 is: 11,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.38 : 21,761.34 = 8,695.35 : x
  2. Step 2: Convert to fraction form
    15,769.38/21,761.34 = 8,695.35/x
  3. Step 3: Cross multiply
    15,769.38x = 21,761.34 × 8,695.35
  4. Step 4: Simplify right side
    15,769.38x = 189,222,358.96
  5. Step 5: Solve for x
    x = 189,222,358.96/15,769.38
  6. Step 6: Final answer
    x = 11,999.35

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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.