Home / 22,219.40-33,330.81-7,428.39

Finding the Fourth Proportional to 22,219.40, 33,330.81 and 7,428.39

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Solution

The fourth proportional to 22,219.40, 33,330.81 and 7,428.39 is: 11,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,219.40 : 33,330.81 = 7,428.39 : x
  2. Step 2: Convert to fraction form
    22,219.40/33,330.81 = 7,428.39/x
  3. Step 3: Cross multiply
    22,219.40x = 33,330.81 × 7,428.39
  4. Step 4: Simplify right side
    22,219.40x = 247,594,255.70
  5. Step 5: Solve for x
    x = 247,594,255.70/22,219.40
  6. Step 6: Final answer
    x = 11,143.16

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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.