Home / 13,812.32-20,718.50-10,543.97

Finding the Fourth Proportional to 13,812.32, 20,718.50 and 10,543.97

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Solution

The fourth proportional to 13,812.32, 20,718.50 and 10,543.97 is: 15,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.32 : 20,718.50 = 10,543.97 : x
  2. Step 2: Convert to fraction form
    13,812.32/20,718.50 = 10,543.97/x
  3. Step 3: Cross multiply
    13,812.32x = 20,718.50 × 10,543.97
  4. Step 4: Simplify right side
    13,812.32x = 218,455,241.52
  5. Step 5: Solve for x
    x = 218,455,241.52/13,812.32
  6. Step 6: Final answer
    x = 15,815.97

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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.