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Finding the Fourth Proportional to 22,215.66, 33,328.16 and 6,420.66

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Solution

The fourth proportional to 22,215.66, 33,328.16 and 6,420.66 is: 9,632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.66 : 33,328.16 = 6,420.66 : x
  2. Step 2: Convert to fraction form
    22,215.66/33,328.16 = 6,420.66/x
  3. Step 3: Cross multiply
    22,215.66x = 33,328.16 × 6,420.66
  4. Step 4: Simplify right side
    22,215.66x = 213,988,783.79
  5. Step 5: Solve for x
    x = 213,988,783.79/22,215.66
  6. Step 6: Final answer
    x = 9,632.34

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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.