Home / 27,780.46-38,297.19-19,808.86

Finding the Fourth Proportional to 27,780.46, 38,297.19 and 19,808.86

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Solution

The fourth proportional to 27,780.46, 38,297.19 and 19,808.86 is: 27,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.46 : 38,297.19 = 19,808.86 : x
  2. Step 2: Convert to fraction form
    27,780.46/38,297.19 = 19,808.86/x
  3. Step 3: Cross multiply
    27,780.46x = 38,297.19 × 19,808.86
  4. Step 4: Simplify right side
    27,780.46x = 758,623,675.10
  5. Step 5: Solve for x
    x = 758,623,675.10/27,780.46
  6. Step 6: Final answer
    x = 27,307.82

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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.