Home / 39,659.88-54,730.96-21,754.74

Finding the Fourth Proportional to 39,659.88, 54,730.96 and 21,754.74

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Solution

The fourth proportional to 39,659.88, 54,730.96 and 21,754.74 is: 30,021.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.88 : 54,730.96 = 21,754.74 : x
  2. Step 2: Convert to fraction form
    39,659.88/54,730.96 = 21,754.74/x
  3. Step 3: Cross multiply
    39,659.88x = 54,730.96 × 21,754.74
  4. Step 4: Simplify right side
    39,659.88x = 1,190,657,804.75
  5. Step 5: Solve for x
    x = 1,190,657,804.75/39,659.88
  6. Step 6: Final answer
    x = 30,021.72

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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.