Home / 12,327.28-17,009.66-7,022.20

Finding the Fourth Proportional to 12,327.28, 17,009.66 and 7,022.20

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Solution

The fourth proportional to 12,327.28, 17,009.66 and 7,022.20 is: 9,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,327.28 : 17,009.66 = 7,022.20 : x
  2. Step 2: Convert to fraction form
    12,327.28/17,009.66 = 7,022.20/x
  3. Step 3: Cross multiply
    12,327.28x = 17,009.66 × 7,022.20
  4. Step 4: Simplify right side
    12,327.28x = 119,445,234.45
  5. Step 5: Solve for x
    x = 119,445,234.45/12,327.28
  6. Step 6: Final answer
    x = 9,689.50

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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.