Home / 39,442.06-54,430.80-21,537.78

Finding the Fourth Proportional to 39,442.06, 54,430.80 and 21,537.78

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Solution

The fourth proportional to 39,442.06, 54,430.80 and 21,537.78 is: 29,722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.06 : 54,430.80 = 21,537.78 : x
  2. Step 2: Convert to fraction form
    39,442.06/54,430.80 = 21,537.78/x
  3. Step 3: Cross multiply
    39,442.06x = 54,430.80 × 21,537.78
  4. Step 4: Simplify right side
    39,442.06x = 1,172,318,595.62
  5. Step 5: Solve for x
    x = 1,172,318,595.62/39,442.06
  6. Step 6: Final answer
    x = 29,722.55

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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.