Home / 12,748.20-19,114.88-4,947.90

Finding the Fourth Proportional to 12,748.20, 19,114.88 and 4,947.90

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Solution

The fourth proportional to 12,748.20, 19,114.88 and 4,947.90 is: 7,418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.20 : 19,114.88 = 4,947.90 : x
  2. Step 2: Convert to fraction form
    12,748.20/19,114.88 = 4,947.90/x
  3. Step 3: Cross multiply
    12,748.20x = 19,114.88 × 4,947.90
  4. Step 4: Simplify right side
    12,748.20x = 94,578,490.01
  5. Step 5: Solve for x
    x = 94,578,490.01/12,748.20
  6. Step 6: Final answer
    x = 7,418.97

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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.