Home / 39,672.18-54,747.36-21,767.40

Finding the Fourth Proportional to 39,672.18, 54,747.36 and 21,767.40

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Solution

The fourth proportional to 39,672.18, 54,747.36 and 21,767.40 is: 30,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,672.18 : 54,747.36 = 21,767.40 : x
  2. Step 2: Convert to fraction form
    39,672.18/54,747.36 = 21,767.40/x
  3. Step 3: Cross multiply
    39,672.18x = 54,747.36 × 21,767.40
  4. Step 4: Simplify right side
    39,672.18x = 1,191,707,684.06
  5. Step 5: Solve for x
    x = 1,191,707,684.06/39,672.18
  6. Step 6: Final answer
    x = 30,038.88

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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.