Home / 10,125.74-15,188.63-3,105.79

Finding the Fourth Proportional to 10,125.74, 15,188.63 and 3,105.79

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Solution

The fourth proportional to 10,125.74, 15,188.63 and 3,105.79 is: 4,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,125.74 : 15,188.63 = 3,105.79 : x
  2. Step 2: Convert to fraction form
    10,125.74/15,188.63 = 3,105.79/x
  3. Step 3: Cross multiply
    10,125.74x = 15,188.63 × 3,105.79
  4. Step 4: Simplify right side
    10,125.74x = 47,172,641.67
  5. Step 5: Solve for x
    x = 47,172,641.67/10,125.74
  6. Step 6: Final answer
    x = 4,658.68

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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.