Home / 15,561.30-21,474.69-8,487.86

Finding the Fourth Proportional to 15,561.30, 21,474.69 and 8,487.86

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Solution

The fourth proportional to 15,561.30, 21,474.69 and 8,487.86 is: 11,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.30 : 21,474.69 = 8,487.86 : x
  2. Step 2: Convert to fraction form
    15,561.30/21,474.69 = 8,487.86/x
  3. Step 3: Cross multiply
    15,561.30x = 21,474.69 × 8,487.86
  4. Step 4: Simplify right side
    15,561.30x = 182,274,162.26
  5. Step 5: Solve for x
    x = 182,274,162.26/15,561.30
  6. Step 6: Final answer
    x = 11,713.30

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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.