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Finding the Fourth Proportional to 29,538.50, 40,740.09 and 18,929.12

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Solution

The fourth proportional to 29,538.50, 40,740.09 and 18,929.12 is: 26,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,538.50 : 40,740.09 = 18,929.12 : x
  2. Step 2: Convert to fraction form
    29,538.50/40,740.09 = 18,929.12/x
  3. Step 3: Cross multiply
    29,538.50x = 40,740.09 × 18,929.12
  4. Step 4: Simplify right side
    29,538.50x = 771,173,848.72
  5. Step 5: Solve for x
    x = 771,173,848.72/29,538.50
  6. Step 6: Final answer
    x = 26,107.42

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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.