Home / 27,538.08-38,058.56-20,821.56

Finding the Fourth Proportional to 27,538.08, 38,058.56 and 20,821.56

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Solution

The fourth proportional to 27,538.08, 38,058.56 and 20,821.56 is: 28,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,538.08 : 38,058.56 = 20,821.56 : x
  2. Step 2: Convert to fraction form
    27,538.08/38,058.56 = 20,821.56/x
  3. Step 3: Cross multiply
    27,538.08x = 38,058.56 × 20,821.56
  4. Step 4: Simplify right side
    27,538.08x = 792,438,590.55
  5. Step 5: Solve for x
    x = 792,438,590.55/27,538.08
  6. Step 6: Final answer
    x = 28,776.10

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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.