Home / 39,627.77-54,687.65-21,722.72

Finding the Fourth Proportional to 39,627.77, 54,687.65 and 21,722.72

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Solution

The fourth proportional to 39,627.77, 54,687.65 and 21,722.72 is: 29,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,627.77 : 54,687.65 = 21,722.72 : x
  2. Step 2: Convert to fraction form
    39,627.77/54,687.65 = 21,722.72/x
  3. Step 3: Cross multiply
    39,627.77x = 54,687.65 × 21,722.72
  4. Step 4: Simplify right side
    39,627.77x = 1,187,964,126.36
  5. Step 5: Solve for x
    x = 1,187,964,126.36/39,627.77
  6. Step 6: Final answer
    x = 29,978.08

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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.