Home / 9,964.78-14,947.20-4,121.56

Finding the Fourth Proportional to 9,964.78, 14,947.20 and 4,121.56

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Solution

The fourth proportional to 9,964.78, 14,947.20 and 4,121.56 is: 6,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,964.78 : 14,947.20 = 4,121.56 : x
  2. Step 2: Convert to fraction form
    9,964.78/14,947.20 = 4,121.56/x
  3. Step 3: Cross multiply
    9,964.78x = 14,947.20 × 4,121.56
  4. Step 4: Simplify right side
    9,964.78x = 61,605,781.63
  5. Step 5: Solve for x
    x = 61,605,781.63/9,964.78
  6. Step 6: Final answer
    x = 6,182.35

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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.