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Finding the Fourth Proportional to 15,741.20, 23,611.80 and 13,602.80

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Solution

The fourth proportional to 15,741.20, 23,611.80 and 13,602.80 is: 20,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.20 : 23,611.80 = 13,602.80 : x
  2. Step 2: Convert to fraction form
    15,741.20/23,611.80 = 13,602.80/x
  3. Step 3: Cross multiply
    15,741.20x = 23,611.80 × 13,602.80
  4. Step 4: Simplify right side
    15,741.20x = 321,186,593.04
  5. Step 5: Solve for x
    x = 321,186,593.04/15,741.20
  6. Step 6: Final answer
    x = 20,404.20

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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.