Home / 40,113.20-55,356.90-21,965.52

Finding the Fourth Proportional to 40,113.20, 55,356.90 and 21,965.52

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Solution

The fourth proportional to 40,113.20, 55,356.90 and 21,965.52 is: 30,312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,113.20 : 55,356.90 = 21,965.52 : x
  2. Step 2: Convert to fraction form
    40,113.20/55,356.90 = 21,965.52/x
  3. Step 3: Cross multiply
    40,113.20x = 55,356.90 × 21,965.52
  4. Step 4: Simplify right side
    40,113.20x = 1,215,943,094.09
  5. Step 5: Solve for x
    x = 1,215,943,094.09/40,113.20
  6. Step 6: Final answer
    x = 30,312.79

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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.