Home / 21,375.60-29,487.96-15,074.16

Finding the Fourth Proportional to 21,375.60, 29,487.96 and 15,074.16

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Solution

The fourth proportional to 21,375.60, 29,487.96 and 15,074.16 is: 20,795.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.60 : 29,487.96 = 15,074.16 : x
  2. Step 2: Convert to fraction form
    21,375.60/29,487.96 = 15,074.16/x
  3. Step 3: Cross multiply
    21,375.60x = 29,487.96 × 15,074.16
  4. Step 4: Simplify right side
    21,375.60x = 444,506,227.11
  5. Step 5: Solve for x
    x = 444,506,227.11/21,375.60
  6. Step 6: Final answer
    x = 20,795.03

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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.