Home / 9,620.24-13,275.96-5,428.40

Finding the Fourth Proportional to 9,620.24, 13,275.96 and 5,428.40

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Solution

The fourth proportional to 9,620.24, 13,275.96 and 5,428.40 is: 7,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.24 : 13,275.96 = 5,428.40 : x
  2. Step 2: Convert to fraction form
    9,620.24/13,275.96 = 5,428.40/x
  3. Step 3: Cross multiply
    9,620.24x = 13,275.96 × 5,428.40
  4. Step 4: Simplify right side
    9,620.24x = 72,067,221.26
  5. Step 5: Solve for x
    x = 72,067,221.26/9,620.24
  6. Step 6: Final answer
    x = 7,491.21

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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.