Home / 10,306.91-15,458.57-4,759.78

Finding the Fourth Proportional to 10,306.91, 15,458.57 and 4,759.78

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Solution

The fourth proportional to 10,306.91, 15,458.57 and 4,759.78 is: 7,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,306.91 : 15,458.57 = 4,759.78 : x
  2. Step 2: Convert to fraction form
    10,306.91/15,458.57 = 4,759.78/x
  3. Step 3: Cross multiply
    10,306.91x = 15,458.57 × 4,759.78
  4. Step 4: Simplify right side
    10,306.91x = 73,579,392.31
  5. Step 5: Solve for x
    x = 73,579,392.31/10,306.91
  6. Step 6: Final answer
    x = 7,138.84

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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.