Home / 20,042.79-27,656.55-11,089.05

Finding the Fourth Proportional to 20,042.79, 27,656.55 and 11,089.05

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Solution

The fourth proportional to 20,042.79, 27,656.55 and 11,089.05 is: 15,301.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.79 : 27,656.55 = 11,089.05 : x
  2. Step 2: Convert to fraction form
    20,042.79/27,656.55 = 11,089.05/x
  3. Step 3: Cross multiply
    20,042.79x = 27,656.55 × 11,089.05
  4. Step 4: Simplify right side
    20,042.79x = 306,684,865.78
  5. Step 5: Solve for x
    x = 306,684,865.78/20,042.79
  6. Step 6: Final answer
    x = 15,301.51

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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.