Home / 9,521.80-13,139.64-5,272.56

Finding the Fourth Proportional to 9,521.80, 13,139.64 and 5,272.56

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Solution

The fourth proportional to 9,521.80, 13,139.64 and 5,272.56 is: 7,275.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.80 : 13,139.64 = 5,272.56 : x
  2. Step 2: Convert to fraction form
    9,521.80/13,139.64 = 5,272.56/x
  3. Step 3: Cross multiply
    9,521.80x = 13,139.64 × 5,272.56
  4. Step 4: Simplify right side
    9,521.80x = 69,279,540.28
  5. Step 5: Solve for x
    x = 69,279,540.28/9,521.80
  6. Step 6: Final answer
    x = 7,275.89

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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.