Home / 39,326.79-54,271.45-21,421.95

Finding the Fourth Proportional to 39,326.79, 54,271.45 and 21,421.95

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Solution

The fourth proportional to 39,326.79, 54,271.45 and 21,421.95 is: 29,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,326.79 : 54,271.45 = 21,421.95 : x
  2. Step 2: Convert to fraction form
    39,326.79/54,271.45 = 21,421.95/x
  3. Step 3: Cross multiply
    39,326.79x = 54,271.45 × 21,421.95
  4. Step 4: Simplify right side
    39,326.79x = 1,162,600,288.33
  5. Step 5: Solve for x
    x = 1,162,600,288.33/39,326.79
  6. Step 6: Final answer
    x = 29,562.55

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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.