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Finding the Fourth Proportional to 22,138.53, 33,208.10 and 12,340.10

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Solution

The fourth proportional to 22,138.53, 33,208.10 and 12,340.10 is: 18,510.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.53 : 33,208.10 = 12,340.10 : x
  2. Step 2: Convert to fraction form
    22,138.53/33,208.10 = 12,340.10/x
  3. Step 3: Cross multiply
    22,138.53x = 33,208.10 × 12,340.10
  4. Step 4: Simplify right side
    22,138.53x = 409,791,047.07
  5. Step 5: Solve for x
    x = 409,791,047.07/22,138.53
  6. Step 6: Final answer
    x = 18,510.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.