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Finding the Fourth Proportional to 29,596.40, 40,804.92 and 21,108.20

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Solution

The fourth proportional to 29,596.40, 40,804.92 and 21,108.20 is: 29,102.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,596.40 : 40,804.92 = 21,108.20 : x
  2. Step 2: Convert to fraction form
    29,596.40/40,804.92 = 21,108.20/x
  3. Step 3: Cross multiply
    29,596.40x = 40,804.92 × 21,108.20
  4. Step 4: Simplify right side
    29,596.40x = 861,318,412.34
  5. Step 5: Solve for x
    x = 861,318,412.34/29,596.40
  6. Step 6: Final answer
    x = 29,102.13

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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.