Home / 10,158.12-15,238.62-3,138.71

Finding the Fourth Proportional to 10,158.12, 15,238.62 and 3,138.71

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Solution

The fourth proportional to 10,158.12, 15,238.62 and 3,138.71 is: 4,708.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,158.12 : 15,238.62 = 3,138.71 : x
  2. Step 2: Convert to fraction form
    10,158.12/15,238.62 = 3,138.71/x
  3. Step 3: Cross multiply
    10,158.12x = 15,238.62 × 3,138.71
  4. Step 4: Simplify right side
    10,158.12x = 47,829,532.79
  5. Step 5: Solve for x
    x = 47,829,532.79/10,158.12
  6. Step 6: Final answer
    x = 4,708.50

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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.