Home / 39,415.20-54,394.17-22,421.89

Finding the Fourth Proportional to 39,415.20, 54,394.17 and 22,421.89

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Solution

The fourth proportional to 39,415.20, 54,394.17 and 22,421.89 is: 30,942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.20 : 54,394.17 = 22,421.89 : x
  2. Step 2: Convert to fraction form
    39,415.20/54,394.17 = 22,421.89/x
  3. Step 3: Cross multiply
    39,415.20x = 54,394.17 × 22,421.89
  4. Step 4: Simplify right side
    39,415.20x = 1,219,620,096.38
  5. Step 5: Solve for x
    x = 1,219,620,096.38/39,415.20
  6. Step 6: Final answer
    x = 30,942.89

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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.