Home / 39,627.82-54,686.10-21,723.58

Finding the Fourth Proportional to 39,627.82, 54,686.10 and 21,723.58

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Solution

The fourth proportional to 39,627.82, 54,686.10 and 21,723.58 is: 29,978.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,627.82 : 54,686.10 = 21,723.58 : x
  2. Step 2: Convert to fraction form
    39,627.82/54,686.10 = 21,723.58/x
  3. Step 3: Cross multiply
    39,627.82x = 54,686.10 × 21,723.58
  4. Step 4: Simplify right side
    39,627.82x = 1,187,977,868.24
  5. Step 5: Solve for x
    x = 1,187,977,868.24/39,627.82
  6. Step 6: Final answer
    x = 29,978.38

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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.