Home / 20,538.06-28,342.62-11,585.94

Finding the Fourth Proportional to 20,538.06, 28,342.62 and 11,585.94

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Solution

The fourth proportional to 20,538.06, 28,342.62 and 11,585.94 is: 15,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.06 : 28,342.62 = 11,585.94 : x
  2. Step 2: Convert to fraction form
    20,538.06/28,342.62 = 11,585.94/x
  3. Step 3: Cross multiply
    20,538.06x = 28,342.62 × 11,585.94
  4. Step 4: Simplify right side
    20,538.06x = 328,375,894.76
  5. Step 5: Solve for x
    x = 328,375,894.76/20,538.06
  6. Step 6: Final answer
    x = 15,988.65

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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.