Home / 15,611.92-21,478.96-13,627.04

Finding the Fourth Proportional to 15,611.92, 21,478.96 and 13,627.04

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Solution

The fourth proportional to 15,611.92, 21,478.96 and 13,627.04 is: 18,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.92 : 21,478.96 = 13,627.04 : x
  2. Step 2: Convert to fraction form
    15,611.92/21,478.96 = 13,627.04/x
  3. Step 3: Cross multiply
    15,611.92x = 21,478.96 × 13,627.04
  4. Step 4: Simplify right side
    15,611.92x = 292,694,647.08
  5. Step 5: Solve for x
    x = 292,694,647.08/15,611.92
  6. Step 6: Final answer
    x = 18,748.15

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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.