Home / 39,689.22-59,502.72-20,667.90

Finding the Fourth Proportional to 39,689.22, 59,502.72 and 20,667.90

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Solution

The fourth proportional to 39,689.22, 59,502.72 and 20,667.90 is: 30,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,689.22 : 59,502.72 = 20,667.90 : x
  2. Step 2: Convert to fraction form
    39,689.22/59,502.72 = 20,667.90/x
  3. Step 3: Cross multiply
    39,689.22x = 59,502.72 × 20,667.90
  4. Step 4: Simplify right side
    39,689.22x = 1,229,796,266.69
  5. Step 5: Solve for x
    x = 1,229,796,266.69/39,689.22
  6. Step 6: Final answer
    x = 30,985.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.