Home / 29,127.55-40,209.55-21,960.36

Finding the Fourth Proportional to 29,127.55, 40,209.55 and 21,960.36

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Solution

The fourth proportional to 29,127.55, 40,209.55 and 21,960.36 is: 30,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,127.55 : 40,209.55 = 21,960.36 : x
  2. Step 2: Convert to fraction form
    29,127.55/40,209.55 = 21,960.36/x
  3. Step 3: Cross multiply
    29,127.55x = 40,209.55 × 21,960.36
  4. Step 4: Simplify right side
    29,127.55x = 883,016,138.54
  5. Step 5: Solve for x
    x = 883,016,138.54/29,127.55
  6. Step 6: Final answer
    x = 30,315.50

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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.