Home / 10,286.19-15,429.29-2,891.40

Finding the Fourth Proportional to 10,286.19, 15,429.29 and 2,891.40

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Solution

The fourth proportional to 10,286.19, 15,429.29 and 2,891.40 is: 4,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,286.19 : 15,429.29 = 2,891.40 : x
  2. Step 2: Convert to fraction form
    10,286.19/15,429.29 = 2,891.40/x
  3. Step 3: Cross multiply
    10,286.19x = 15,429.29 × 2,891.40
  4. Step 4: Simplify right side
    10,286.19x = 44,612,176.79
  5. Step 5: Solve for x
    x = 44,612,176.79/10,286.19
  6. Step 6: Final answer
    x = 4,337.09

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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.