Home / 20,537.12-28,341.12-11,587.54

Finding the Fourth Proportional to 20,537.12, 28,341.12 and 11,587.54

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Solution

The fourth proportional to 20,537.12, 28,341.12 and 11,587.54 is: 15,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.12 : 28,341.12 = 11,587.54 : x
  2. Step 2: Convert to fraction form
    20,537.12/28,341.12 = 11,587.54/x
  3. Step 3: Cross multiply
    20,537.12x = 28,341.12 × 11,587.54
  4. Step 4: Simplify right side
    20,537.12x = 328,403,861.64
  5. Step 5: Solve for x
    x = 328,403,861.64/20,537.12
  6. Step 6: Final answer
    x = 15,990.75

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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.