Home / 20,744.57-28,627.62-11,312.93

Finding the Fourth Proportional to 20,744.57, 28,627.62 and 11,312.93

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Solution

The fourth proportional to 20,744.57, 28,627.62 and 11,312.93 is: 15,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.57 : 28,627.62 = 11,312.93 : x
  2. Step 2: Convert to fraction form
    20,744.57/28,627.62 = 11,312.93/x
  3. Step 3: Cross multiply
    20,744.57x = 28,627.62 × 11,312.93
  4. Step 4: Simplify right side
    20,744.57x = 323,862,261.13
  5. Step 5: Solve for x
    x = 323,862,261.13/20,744.57
  6. Step 6: Final answer
    x = 15,611.91

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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.