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Finding the Fourth Proportional to 29,598.40, 40,807.68 and 21,110.20

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Solution

The fourth proportional to 29,598.40, 40,807.68 and 21,110.20 is: 29,104.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,598.40 : 40,807.68 = 21,110.20 : x
  2. Step 2: Convert to fraction form
    29,598.40/40,807.68 = 21,110.20/x
  3. Step 3: Cross multiply
    29,598.40x = 40,807.68 × 21,110.20
  4. Step 4: Simplify right side
    29,598.40x = 861,458,286.34
  5. Step 5: Solve for x
    x = 861,458,286.34/29,598.40
  6. Step 6: Final answer
    x = 29,104.89

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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.