Home / 15,769.32-21,761.40-8,696.22

Finding the Fourth Proportional to 15,769.32, 21,761.40 and 8,696.22

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Solution

The fourth proportional to 15,769.32, 21,761.40 and 8,696.22 is: 12,000.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.32 : 21,761.40 = 8,696.22 : x
  2. Step 2: Convert to fraction form
    15,769.32/21,761.40 = 8,696.22/x
  3. Step 3: Cross multiply
    15,769.32x = 21,761.40 × 8,696.22
  4. Step 4: Simplify right side
    15,769.32x = 189,241,921.91
  5. Step 5: Solve for x
    x = 189,241,921.91/15,769.32
  6. Step 6: Final answer
    x = 12,000.64

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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.