Home / 39,140.23-54,013.64-21,235.38

Finding the Fourth Proportional to 39,140.23, 54,013.64 and 21,235.38

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Solution

The fourth proportional to 39,140.23, 54,013.64 and 21,235.38 is: 29,304.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140.23 : 54,013.64 = 21,235.38 : x
  2. Step 2: Convert to fraction form
    39,140.23/54,013.64 = 21,235.38/x
  3. Step 3: Cross multiply
    39,140.23x = 54,013.64 × 21,235.38
  4. Step 4: Simplify right side
    39,140.23x = 1,147,000,064.41
  5. Step 5: Solve for x
    x = 1,147,000,064.41/39,140.23
  6. Step 6: Final answer
    x = 29,304.89

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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.