Home / 15,769.05-21,761.15-8,695.32

Finding the Fourth Proportional to 15,769.05, 21,761.15 and 8,695.32

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Solution

The fourth proportional to 15,769.05, 21,761.15 and 8,695.32 is: 11,999.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.05 : 21,761.15 = 8,695.32 : x
  2. Step 2: Convert to fraction form
    15,769.05/21,761.15 = 8,695.32/x
  3. Step 3: Cross multiply
    15,769.05x = 21,761.15 × 8,695.32
  4. Step 4: Simplify right side
    15,769.05x = 189,220,119.34
  5. Step 5: Solve for x
    x = 189,220,119.34/15,769.05
  6. Step 6: Final answer
    x = 11,999.46

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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.