Home / 10,869.20-16,314.60-5,328.80

Finding the Fourth Proportional to 10,869.20, 16,314.60 and 5,328.80

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Solution

The fourth proportional to 10,869.20, 16,314.60 and 5,328.80 is: 7,998.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.20 : 16,314.60 = 5,328.80 : x
  2. Step 2: Convert to fraction form
    10,869.20/16,314.60 = 5,328.80/x
  3. Step 3: Cross multiply
    10,869.20x = 16,314.60 × 5,328.80
  4. Step 4: Simplify right side
    10,869.20x = 86,937,240.48
  5. Step 5: Solve for x
    x = 86,937,240.48/10,869.20
  6. Step 6: Final answer
    x = 7,998.49

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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.