Home / 13,543.90-20,297.40-8,280.75

Finding the Fourth Proportional to 13,543.90, 20,297.40 and 8,280.75

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Solution

The fourth proportional to 13,543.90, 20,297.40 and 8,280.75 is: 12,409.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.90 : 20,297.40 = 8,280.75 : x
  2. Step 2: Convert to fraction form
    13,543.90/20,297.40 = 8,280.75/x
  3. Step 3: Cross multiply
    13,543.90x = 20,297.40 × 8,280.75
  4. Step 4: Simplify right side
    13,543.90x = 168,077,552.16
  5. Step 5: Solve for x
    x = 168,077,552.16/13,543.90
  6. Step 6: Final answer
    x = 12,409.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.