Home / 10,411.80-15,618.70-5,478.36

Finding the Fourth Proportional to 10,411.80, 15,618.70 and 5,478.36

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Solution

The fourth proportional to 10,411.80, 15,618.70 and 5,478.36 is: 8,218.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,411.80 : 15,618.70 = 5,478.36 : x
  2. Step 2: Convert to fraction form
    10,411.80/15,618.70 = 5,478.36/x
  3. Step 3: Cross multiply
    10,411.80x = 15,618.70 × 5,478.36
  4. Step 4: Simplify right side
    10,411.80x = 85,564,861.33
  5. Step 5: Solve for x
    x = 85,564,861.33/10,411.80
  6. Step 6: Final answer
    x = 8,218.07

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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.