Home / 13,962.20-20,943.30-8,778.20

Finding the Fourth Proportional to 13,962.20, 20,943.30 and 8,778.20

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Solution

The fourth proportional to 13,962.20, 20,943.30 and 8,778.20 is: 13,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,962.20 : 20,943.30 = 8,778.20 : x
  2. Step 2: Convert to fraction form
    13,962.20/20,943.30 = 8,778.20/x
  3. Step 3: Cross multiply
    13,962.20x = 20,943.30 × 8,778.20
  4. Step 4: Simplify right side
    13,962.20x = 183,844,476.06
  5. Step 5: Solve for x
    x = 183,844,476.06/13,962.20
  6. Step 6: Final answer
    x = 13,167.30

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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.