Home / 20,611.76-28,444.02-11,180.12

Finding the Fourth Proportional to 20,611.76, 28,444.02 and 11,180.12

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Solution

The fourth proportional to 20,611.76, 28,444.02 and 11,180.12 is: 15,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.76 : 28,444.02 = 11,180.12 : x
  2. Step 2: Convert to fraction form
    20,611.76/28,444.02 = 11,180.12/x
  3. Step 3: Cross multiply
    20,611.76x = 28,444.02 × 11,180.12
  4. Step 4: Simplify right side
    20,611.76x = 318,007,556.88
  5. Step 5: Solve for x
    x = 318,007,556.88/20,611.76
  6. Step 6: Final answer
    x = 15,428.45

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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.