Home / 9,521.56-13,139.80-5,272.75

Finding the Fourth Proportional to 9,521.56, 13,139.80 and 5,272.75

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Solution

The fourth proportional to 9,521.56, 13,139.80 and 5,272.75 is: 7,276.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.56 : 13,139.80 = 5,272.75 : x
  2. Step 2: Convert to fraction form
    9,521.56/13,139.80 = 5,272.75/x
  3. Step 3: Cross multiply
    9,521.56x = 13,139.80 × 5,272.75
  4. Step 4: Simplify right side
    9,521.56x = 69,282,834.42
  5. Step 5: Solve for x
    x = 69,282,834.42/9,521.56
  6. Step 6: Final answer
    x = 7,276.42

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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.