Home / 20,744.32-28,627.52-11,312.96

Finding the Fourth Proportional to 20,744.32, 28,627.52 and 11,312.96

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Solution

The fourth proportional to 20,744.32, 28,627.52 and 11,312.96 is: 15,612.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.32 : 28,627.52 = 11,312.96 : x
  2. Step 2: Convert to fraction form
    20,744.32/28,627.52 = 11,312.96/x
  3. Step 3: Cross multiply
    20,744.32x = 28,627.52 × 11,312.96
  4. Step 4: Simplify right side
    20,744.32x = 323,861,988.66
  5. Step 5: Solve for x
    x = 323,861,988.66/20,744.32
  6. Step 6: Final answer
    x = 15,612.08

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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.