Home / 13,275.61-18,314.19-8,561.41

Finding the Fourth Proportional to 13,275.61, 18,314.19 and 8,561.41

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Solution

The fourth proportional to 13,275.61, 18,314.19 and 8,561.41 is: 11,810.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.61 : 18,314.19 = 8,561.41 : x
  2. Step 2: Convert to fraction form
    13,275.61/18,314.19 = 8,561.41/x
  3. Step 3: Cross multiply
    13,275.61x = 18,314.19 × 8,561.41
  4. Step 4: Simplify right side
    13,275.61x = 156,795,289.41
  5. Step 5: Solve for x
    x = 156,795,289.41/13,275.61
  6. Step 6: Final answer
    x = 11,810.78

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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.