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Finding the Fourth Proportional to 29,699.76, 40,986.90 and 16,272.18

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Solution

The fourth proportional to 29,699.76, 40,986.90 and 16,272.18 is: 22,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,699.76 : 40,986.90 = 16,272.18 : x
  2. Step 2: Convert to fraction form
    29,699.76/40,986.90 = 16,272.18/x
  3. Step 3: Cross multiply
    29,699.76x = 40,986.90 × 16,272.18
  4. Step 4: Simplify right side
    29,699.76x = 666,946,214.44
  5. Step 5: Solve for x
    x = 666,946,214.44/29,699.76
  6. Step 6: Final answer
    x = 22,456.28

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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.