Home / 15,561.57-21,474.96-8,488.04

Finding the Fourth Proportional to 15,561.57, 21,474.96 and 8,488.04

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Solution

The fourth proportional to 15,561.57, 21,474.96 and 8,488.04 is: 11,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.57 : 21,474.96 = 8,488.04 : x
  2. Step 2: Convert to fraction form
    15,561.57/21,474.96 = 8,488.04/x
  3. Step 3: Cross multiply
    15,561.57x = 21,474.96 × 8,488.04
  4. Step 4: Simplify right side
    15,561.57x = 182,280,212.10
  5. Step 5: Solve for x
    x = 182,280,212.10/15,561.57
  6. Step 6: Final answer
    x = 11,713.48

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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.