Home / 27,767.81-38,319.68-19,398.89

Finding the Fourth Proportional to 27,767.81, 38,319.68 and 19,398.89

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Solution

The fourth proportional to 27,767.81, 38,319.68 and 19,398.89 is: 26,770.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,767.81 : 38,319.68 = 19,398.89 : x
  2. Step 2: Convert to fraction form
    27,767.81/38,319.68 = 19,398.89/x
  3. Step 3: Cross multiply
    27,767.81x = 38,319.68 × 19,398.89
  4. Step 4: Simplify right side
    27,767.81x = 743,359,401.45
  5. Step 5: Solve for x
    x = 743,359,401.45/27,767.81
  6. Step 6: Final answer
    x = 26,770.54

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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.