Home / 13,145.20-19,695.84-9,441.76

Finding the Fourth Proportional to 13,145.20, 19,695.84 and 9,441.76

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Solution

The fourth proportional to 13,145.20, 19,695.84 and 9,441.76 is: 14,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.20 : 19,695.84 = 9,441.76 : x
  2. Step 2: Convert to fraction form
    13,145.20/19,695.84 = 9,441.76/x
  3. Step 3: Cross multiply
    13,145.20x = 19,695.84 × 9,441.76
  4. Step 4: Simplify right side
    13,145.20x = 185,963,394.28
  5. Step 5: Solve for x
    x = 185,963,394.28/13,145.20
  6. Step 6: Final answer
    x = 14,146.87

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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.