Home / 10,863.20-16,278.60-9,210.80

Finding the Fourth Proportional to 10,863.20, 16,278.60 and 9,210.80

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Solution

The fourth proportional to 10,863.20, 16,278.60 and 9,210.80 is: 13,802.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.20 : 16,278.60 = 9,210.80 : x
  2. Step 2: Convert to fraction form
    10,863.20/16,278.60 = 9,210.80/x
  3. Step 3: Cross multiply
    10,863.20x = 16,278.60 × 9,210.80
  4. Step 4: Simplify right side
    10,863.20x = 149,938,928.88
  5. Step 5: Solve for x
    x = 149,938,928.88/10,863.20
  6. Step 6: Final answer
    x = 13,802.46

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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.