Home / 40,112.95-55,353.77-21,960.20

Finding the Fourth Proportional to 40,112.95, 55,353.77 and 21,960.20

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Solution

The fourth proportional to 40,112.95, 55,353.77 and 21,960.20 is: 30,303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,112.95 : 55,353.77 = 21,960.20 : x
  2. Step 2: Convert to fraction form
    40,112.95/55,353.77 = 21,960.20/x
  3. Step 3: Cross multiply
    40,112.95x = 55,353.77 × 21,960.20
  4. Step 4: Simplify right side
    40,112.95x = 1,215,579,859.95
  5. Step 5: Solve for x
    x = 1,215,579,859.95/40,112.95
  6. Step 6: Final answer
    x = 30,303.93

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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.