Home / 40,148.82-55,403.51-21,999.44

Finding the Fourth Proportional to 40,148.82, 55,403.51 and 21,999.44

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Solution

The fourth proportional to 40,148.82, 55,403.51 and 21,999.44 is: 30,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,148.82 : 55,403.51 = 21,999.44 : x
  2. Step 2: Convert to fraction form
    40,148.82/55,403.51 = 21,999.44/x
  3. Step 3: Cross multiply
    40,148.82x = 55,403.51 × 21,999.44
  4. Step 4: Simplify right side
    40,148.82x = 1,218,845,807.02
  5. Step 5: Solve for x
    x = 1,218,845,807.02/40,148.82
  6. Step 6: Final answer
    x = 30,358.20

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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.