Home / 14,121.80-21,182.70-12,176.20

Finding the Fourth Proportional to 14,121.80, 21,182.70 and 12,176.20

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Solution

The fourth proportional to 14,121.80, 21,182.70 and 12,176.20 is: 18,264.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.80 : 21,182.70 = 12,176.20 : x
  2. Step 2: Convert to fraction form
    14,121.80/21,182.70 = 12,176.20/x
  3. Step 3: Cross multiply
    14,121.80x = 21,182.70 × 12,176.20
  4. Step 4: Simplify right side
    14,121.80x = 257,924,791.74
  5. Step 5: Solve for x
    x = 257,924,791.74/14,121.80
  6. Step 6: Final answer
    x = 18,264.30

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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.