Home / 42,809.98-64,217.78-11,220.82

Finding the Fourth Proportional to 42,809.98, 64,217.78 and 11,220.82

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Solution

The fourth proportional to 42,809.98, 64,217.78 and 11,220.82 is: 16,831.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,809.98 : 64,217.78 = 11,220.82 : x
  2. Step 2: Convert to fraction form
    42,809.98/64,217.78 = 11,220.82/x
  3. Step 3: Cross multiply
    42,809.98x = 64,217.78 × 11,220.82
  4. Step 4: Simplify right side
    42,809.98x = 720,576,150.18
  5. Step 5: Solve for x
    x = 720,576,150.18/42,809.98
  6. Step 6: Final answer
    x = 16,831.97

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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.