Home / 19,540.80-26,967.84-12,091.20

Finding the Fourth Proportional to 19,540.80, 26,967.84 and 12,091.20

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Solution

The fourth proportional to 19,540.80, 26,967.84 and 12,091.20 is: 16,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.80 : 26,967.84 = 12,091.20 : x
  2. Step 2: Convert to fraction form
    19,540.80/26,967.84 = 12,091.20/x
  3. Step 3: Cross multiply
    19,540.80x = 26,967.84 × 12,091.20
  4. Step 4: Simplify right side
    19,540.80x = 326,073,547.01
  5. Step 5: Solve for x
    x = 326,073,547.01/19,540.80
  6. Step 6: Final answer
    x = 16,686.81

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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.