Home / 10,538.35-15,809.82-3,143.41

Finding the Fourth Proportional to 10,538.35, 15,809.82 and 3,143.41

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Solution

The fourth proportional to 10,538.35, 15,809.82 and 3,143.41 is: 4,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,538.35 : 15,809.82 = 3,143.41 : x
  2. Step 2: Convert to fraction form
    10,538.35/15,809.82 = 3,143.41/x
  3. Step 3: Cross multiply
    10,538.35x = 15,809.82 × 3,143.41
  4. Step 4: Simplify right side
    10,538.35x = 49,696,746.29
  5. Step 5: Solve for x
    x = 49,696,746.29/10,538.35
  6. Step 6: Final answer
    x = 4,715.80

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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.