Home / 9,009.18-12,432.24-5,231.70

Finding the Fourth Proportional to 9,009.18, 12,432.24 and 5,231.70

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Solution

The fourth proportional to 9,009.18, 12,432.24 and 5,231.70 is: 7,219.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,009.18 : 12,432.24 = 5,231.70 : x
  2. Step 2: Convert to fraction form
    9,009.18/12,432.24 = 5,231.70/x
  3. Step 3: Cross multiply
    9,009.18x = 12,432.24 × 5,231.70
  4. Step 4: Simplify right side
    9,009.18x = 65,041,750.01
  5. Step 5: Solve for x
    x = 65,041,750.01/9,009.18
  6. Step 6: Final answer
    x = 7,219.50

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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.