Home / 20,539.63-28,344.97-11,587.11

Finding the Fourth Proportional to 20,539.63, 28,344.97 and 11,587.11

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Solution

The fourth proportional to 20,539.63, 28,344.97 and 11,587.11 is: 15,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.63 : 28,344.97 = 11,587.11 : x
  2. Step 2: Convert to fraction form
    20,539.63/28,344.97 = 11,587.11/x
  3. Step 3: Cross multiply
    20,539.63x = 28,344.97 × 11,587.11
  4. Step 4: Simplify right side
    20,539.63x = 328,436,085.68
  5. Step 5: Solve for x
    x = 328,436,085.68/20,539.63
  6. Step 6: Final answer
    x = 15,990.36

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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.