Home / 27,537.08-38,057.18-20,820.56

Finding the Fourth Proportional to 27,537.08, 38,057.18 and 20,820.56

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Solution

The fourth proportional to 27,537.08, 38,057.18 and 20,820.56 is: 28,774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,537.08 : 38,057.18 = 20,820.56 : x
  2. Step 2: Convert to fraction form
    27,537.08/38,057.18 = 20,820.56/x
  3. Step 3: Cross multiply
    27,537.08x = 38,057.18 × 20,820.56
  4. Step 4: Simplify right side
    27,537.08x = 792,371,505.23
  5. Step 5: Solve for x
    x = 792,371,505.23/27,537.08
  6. Step 6: Final answer
    x = 28,774.72

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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.