Home / 9,930.81-13,704.28-5,454.55

Finding the Fourth Proportional to 9,930.81, 13,704.28 and 5,454.55

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Solution

The fourth proportional to 9,930.81, 13,704.28 and 5,454.55 is: 7,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.81 : 13,704.28 = 5,454.55 : x
  2. Step 2: Convert to fraction form
    9,930.81/13,704.28 = 5,454.55/x
  3. Step 3: Cross multiply
    9,930.81x = 13,704.28 × 5,454.55
  4. Step 4: Simplify right side
    9,930.81x = 74,750,680.47
  5. Step 5: Solve for x
    x = 74,750,680.47/9,930.81
  6. Step 6: Final answer
    x = 7,527.15

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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.