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Finding the Fourth Proportional to 29,419.54, 40,597.30 and 15,990.72

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Solution

The fourth proportional to 29,419.54, 40,597.30 and 15,990.72 is: 22,066.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,419.54 : 40,597.30 = 15,990.72 : x
  2. Step 2: Convert to fraction form
    29,419.54/40,597.30 = 15,990.72/x
  3. Step 3: Cross multiply
    29,419.54x = 40,597.30 × 15,990.72
  4. Step 4: Simplify right side
    29,419.54x = 649,180,057.06
  5. Step 5: Solve for x
    x = 649,180,057.06/29,419.54
  6. Step 6: Final answer
    x = 22,066.29

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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.