Home / 20,738.02-28,618.64-11,306.65

Finding the Fourth Proportional to 20,738.02, 28,618.64 and 11,306.65

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Solution

The fourth proportional to 20,738.02, 28,618.64 and 11,306.65 is: 15,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.02 : 28,618.64 = 11,306.65 : x
  2. Step 2: Convert to fraction form
    20,738.02/28,618.64 = 11,306.65/x
  3. Step 3: Cross multiply
    20,738.02x = 28,618.64 × 11,306.65
  4. Step 4: Simplify right side
    20,738.02x = 323,580,945.96
  5. Step 5: Solve for x
    x = 323,580,945.96/20,738.02
  6. Step 6: Final answer
    x = 15,603.27

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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.