Home / 27,977.82-38,609.40-15,402.57

Finding the Fourth Proportional to 27,977.82, 38,609.40 and 15,402.57

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Solution

The fourth proportional to 27,977.82, 38,609.40 and 15,402.57 is: 21,255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.82 : 38,609.40 = 15,402.57 : x
  2. Step 2: Convert to fraction form
    27,977.82/38,609.40 = 15,402.57/x
  3. Step 3: Cross multiply
    27,977.82x = 38,609.40 × 15,402.57
  4. Step 4: Simplify right side
    27,977.82x = 594,683,986.16
  5. Step 5: Solve for x
    x = 594,683,986.16/27,977.82
  6. Step 6: Final answer
    x = 21,255.55

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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.