Home / 39,627.89-54,686.24-21,723.65

Finding the Fourth Proportional to 39,627.89, 54,686.24 and 21,723.65

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Solution

The fourth proportional to 39,627.89, 54,686.24 and 21,723.65 is: 29,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,627.89 : 54,686.24 = 21,723.65 : x
  2. Step 2: Convert to fraction form
    39,627.89/54,686.24 = 21,723.65/x
  3. Step 3: Cross multiply
    39,627.89x = 54,686.24 × 21,723.65
  4. Step 4: Simplify right side
    39,627.89x = 1,187,984,642.06
  5. Step 5: Solve for x
    x = 1,187,984,642.06/39,627.89
  6. Step 6: Final answer
    x = 29,978.50

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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.