Home / 20,537.08-28,341.16-11,105.64

Finding the Fourth Proportional to 20,537.08, 28,341.16 and 11,105.64

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Solution

The fourth proportional to 20,537.08, 28,341.16 and 11,105.64 is: 15,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.08 : 28,341.16 = 11,105.64 : x
  2. Step 2: Convert to fraction form
    20,537.08/28,341.16 = 11,105.64/x
  3. Step 3: Cross multiply
    20,537.08x = 28,341.16 × 11,105.64
  4. Step 4: Simplify right side
    20,537.08x = 314,746,692.38
  5. Step 5: Solve for x
    x = 314,746,692.38/20,537.08
  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.