Home / 13,656.60-18,841.44-8,280.72

Finding the Fourth Proportional to 13,656.60, 18,841.44 and 8,280.72

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Solution

The fourth proportional to 13,656.60, 18,841.44 and 8,280.72 is: 11,424.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.60 : 18,841.44 = 8,280.72 : x
  2. Step 2: Convert to fraction form
    13,656.60/18,841.44 = 8,280.72/x
  3. Step 3: Cross multiply
    13,656.60x = 18,841.44 × 8,280.72
  4. Step 4: Simplify right side
    13,656.60x = 156,020,689.04
  5. Step 5: Solve for x
    x = 156,020,689.04/13,656.60
  6. Step 6: Final answer
    x = 11,424.56

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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.