Home / 20,512.18-28,288.02-13,442.50

Finding the Fourth Proportional to 20,512.18, 28,288.02 and 13,442.50

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Solution

The fourth proportional to 20,512.18, 28,288.02 and 13,442.50 is: 18,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.18 : 28,288.02 = 13,442.50 : x
  2. Step 2: Convert to fraction form
    20,512.18/28,288.02 = 13,442.50/x
  3. Step 3: Cross multiply
    20,512.18x = 28,288.02 × 13,442.50
  4. Step 4: Simplify right side
    20,512.18x = 380,261,719.01
  5. Step 5: Solve for x
    x = 380,261,719.01/20,512.18
  6. Step 6: Final answer
    x = 18,538.34

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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.