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Finding the Fourth Proportional to 29,597.40, 40,806.30 and 21,109.20

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Solution

The fourth proportional to 29,597.40, 40,806.30 and 21,109.20 is: 29,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,597.40 : 40,806.30 = 21,109.20 : x
  2. Step 2: Convert to fraction form
    29,597.40/40,806.30 = 21,109.20/x
  3. Step 3: Cross multiply
    29,597.40x = 40,806.30 × 21,109.20
  4. Step 4: Simplify right side
    29,597.40x = 861,388,347.96
  5. Step 5: Solve for x
    x = 861,388,347.96/29,597.40
  6. Step 6: Final answer
    x = 29,103.51

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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.