Home / 40,015.63-55,222.68-22,111.79

Finding the Fourth Proportional to 40,015.63, 55,222.68 and 22,111.79

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Solution

The fourth proportional to 40,015.63, 55,222.68 and 22,111.79 is: 30,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,015.63 : 55,222.68 = 22,111.79 : x
  2. Step 2: Convert to fraction form
    40,015.63/55,222.68 = 22,111.79/x
  3. Step 3: Cross multiply
    40,015.63x = 55,222.68 × 22,111.79
  4. Step 4: Simplify right side
    40,015.63x = 1,221,072,303.40
  5. Step 5: Solve for x
    x = 1,221,072,303.40/40,015.63
  6. Step 6: Final answer
    x = 30,514.88

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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.