Home / 9,728.20-13,423.62-5,747.68

Finding the Fourth Proportional to 9,728.20, 13,423.62 and 5,747.68

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Solution

The fourth proportional to 9,728.20, 13,423.62 and 5,747.68 is: 7,931.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728.20 : 13,423.62 = 5,747.68 : x
  2. Step 2: Convert to fraction form
    9,728.20/13,423.62 = 5,747.68/x
  3. Step 3: Cross multiply
    9,728.20x = 13,423.62 × 5,747.68
  4. Step 4: Simplify right side
    9,728.20x = 77,154,672.20
  5. Step 5: Solve for x
    x = 77,154,672.20/9,728.20
  6. Step 6: Final answer
    x = 7,931.03

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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.