Home / 20,718.02-28,590.61-11,286.38

Finding the Fourth Proportional to 20,718.02, 28,590.61 and 11,286.38

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Solution

The fourth proportional to 20,718.02, 28,590.61 and 11,286.38 is: 15,575.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.02 : 28,590.61 = 11,286.38 : x
  2. Step 2: Convert to fraction form
    20,718.02/28,590.61 = 11,286.38/x
  3. Step 3: Cross multiply
    20,718.02x = 28,590.61 × 11,286.38
  4. Step 4: Simplify right side
    20,718.02x = 322,684,488.89
  5. Step 5: Solve for x
    x = 322,684,488.89/20,718.02
  6. Step 6: Final answer
    x = 15,575.06

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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.