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Finding the Fourth Proportional to 29,632.20, 40,822.02 and 20,663.40

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Solution

The fourth proportional to 29,632.20, 40,822.02 and 20,663.40 is: 28,466.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,632.20 : 40,822.02 = 20,663.40 : x
  2. Step 2: Convert to fraction form
    29,632.20/40,822.02 = 20,663.40/x
  3. Step 3: Cross multiply
    29,632.20x = 40,822.02 × 20,663.40
  4. Step 4: Simplify right side
    29,632.20x = 843,521,728.07
  5. Step 5: Solve for x
    x = 843,521,728.07/29,632.20
  6. Step 6: Final answer
    x = 28,466.39

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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.