Home / 20,442.80-28,201.01-12,471.18

Finding the Fourth Proportional to 20,442.80, 28,201.01 and 12,471.18

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Solution

The fourth proportional to 20,442.80, 28,201.01 and 12,471.18 is: 17,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.80 : 28,201.01 = 12,471.18 : x
  2. Step 2: Convert to fraction form
    20,442.80/28,201.01 = 12,471.18/x
  3. Step 3: Cross multiply
    20,442.80x = 28,201.01 × 12,471.18
  4. Step 4: Simplify right side
    20,442.80x = 351,699,809.54
  5. Step 5: Solve for x
    x = 351,699,809.54/20,442.80
  6. Step 6: Final answer
    x = 17,204.10

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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.