Home / 20,541.72-28,347.54-11,589.20

Finding the Fourth Proportional to 20,541.72, 28,347.54 and 11,589.20

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Solution

The fourth proportional to 20,541.72, 28,347.54 and 11,589.20 is: 15,993.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.72 : 28,347.54 = 11,589.20 : x
  2. Step 2: Convert to fraction form
    20,541.72/28,347.54 = 11,589.20/x
  3. Step 3: Cross multiply
    20,541.72x = 28,347.54 × 11,589.20
  4. Step 4: Simplify right side
    20,541.72x = 328,525,310.57
  5. Step 5: Solve for x
    x = 328,525,310.57/20,541.72
  6. Step 6: Final answer
    x = 15,993.08

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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.