Home / 10,862.80-16,294.20-4,286.80

Finding the Fourth Proportional to 10,862.80, 16,294.20 and 4,286.80

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Solution

The fourth proportional to 10,862.80, 16,294.20 and 4,286.80 is: 6,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.80 : 16,294.20 = 4,286.80 : x
  2. Step 2: Convert to fraction form
    10,862.80/16,294.20 = 4,286.80/x
  3. Step 3: Cross multiply
    10,862.80x = 16,294.20 × 4,286.80
  4. Step 4: Simplify right side
    10,862.80x = 69,849,976.56
  5. Step 5: Solve for x
    x = 69,849,976.56/10,862.80
  6. Step 6: Final answer
    x = 6,430.20

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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.