Home / 20,537.07-28,341.12-11,105.65

Finding the Fourth Proportional to 20,537.07, 28,341.12 and 11,105.65

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Solution

The fourth proportional to 20,537.07, 28,341.12 and 11,105.65 is: 15,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.07 : 28,341.12 = 11,105.65 : x
  2. Step 2: Convert to fraction form
    20,537.07/28,341.12 = 11,105.65/x
  3. Step 3: Cross multiply
    20,537.07x = 28,341.12 × 11,105.65
  4. Step 4: Simplify right side
    20,537.07x = 314,746,559.33
  5. Step 5: Solve for x
    x = 314,746,559.33/20,537.07
  6. Step 6: Final answer
    x = 15,325.78

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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.