Home / 15,742.20-21,723.84-9,026.76

Finding the Fourth Proportional to 15,742.20, 21,723.84 and 9,026.76

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Solution

The fourth proportional to 15,742.20, 21,723.84 and 9,026.76 is: 12,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.20 : 21,723.84 = 9,026.76 : x
  2. Step 2: Convert to fraction form
    15,742.20/21,723.84 = 9,026.76/x
  3. Step 3: Cross multiply
    15,742.20x = 21,723.84 × 9,026.76
  4. Step 4: Simplify right side
    15,742.20x = 196,095,889.96
  5. Step 5: Solve for x
    x = 196,095,889.96/15,742.20
  6. Step 6: Final answer
    x = 12,456.70

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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.