Home / 10,478.74-15,717.91-4,238.68

Finding the Fourth Proportional to 10,478.74, 15,717.91 and 4,238.68

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Solution

The fourth proportional to 10,478.74, 15,717.91 and 4,238.68 is: 6,357.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.74 : 15,717.91 = 4,238.68 : x
  2. Step 2: Convert to fraction form
    10,478.74/15,717.91 = 4,238.68/x
  3. Step 3: Cross multiply
    10,478.74x = 15,717.91 × 4,238.68
  4. Step 4: Simplify right side
    10,478.74x = 66,623,190.76
  5. Step 5: Solve for x
    x = 66,623,190.76/10,478.74
  6. Step 6: Final answer
    x = 6,357.94

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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.