Home / 20,278.56-30,417.88-6,427.52

Finding the Fourth Proportional to 20,278.56, 30,417.88 and 6,427.52

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Solution

The fourth proportional to 20,278.56, 30,417.88 and 6,427.52 is: 9,641.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.56 : 30,417.88 = 6,427.52 : x
  2. Step 2: Convert to fraction form
    20,278.56/30,417.88 = 6,427.52/x
  3. Step 3: Cross multiply
    20,278.56x = 30,417.88 × 6,427.52
  4. Step 4: Simplify right side
    20,278.56x = 195,511,532.06
  5. Step 5: Solve for x
    x = 195,511,532.06/20,278.56
  6. Step 6: Final answer
    x = 9,641.29

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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.