Home / 13,761.80-18,948.12-12,145.04

Finding the Fourth Proportional to 13,761.80, 18,948.12 and 12,145.04

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Solution

The fourth proportional to 13,761.80, 18,948.12 and 12,145.04 is: 16,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.80 : 18,948.12 = 12,145.04 : x
  2. Step 2: Convert to fraction form
    13,761.80/18,948.12 = 12,145.04/x
  3. Step 3: Cross multiply
    13,761.80x = 18,948.12 × 12,145.04
  4. Step 4: Simplify right side
    13,761.80x = 230,125,675.32
  5. Step 5: Solve for x
    x = 230,125,675.32/13,761.80
  6. Step 6: Final answer
    x = 16,722.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.