Home / 9,378.18-12,923.55-8,472.06

Finding the Fourth Proportional to 9,378.18, 12,923.55 and 8,472.06

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Solution

The fourth proportional to 9,378.18, 12,923.55 and 8,472.06 is: 11,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.18 : 12,923.55 = 8,472.06 : x
  2. Step 2: Convert to fraction form
    9,378.18/12,923.55 = 8,472.06/x
  3. Step 3: Cross multiply
    9,378.18x = 12,923.55 × 8,472.06
  4. Step 4: Simplify right side
    9,378.18x = 109,489,091.01
  5. Step 5: Solve for x
    x = 109,489,091.01/9,378.18
  6. Step 6: Final answer
    x = 11,674.88

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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.