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Finding the Fourth Proportional to 29,171.34, 40,262.47 and 18,975.11

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Solution

The fourth proportional to 29,171.34, 40,262.47 and 18,975.11 is: 26,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,171.34 : 40,262.47 = 18,975.11 : x
  2. Step 2: Convert to fraction form
    29,171.34/40,262.47 = 18,975.11/x
  3. Step 3: Cross multiply
    29,171.34x = 40,262.47 × 18,975.11
  4. Step 4: Simplify right side
    29,171.34x = 763,984,774.85
  5. Step 5: Solve for x
    x = 763,984,774.85/29,171.34
  6. Step 6: Final answer
    x = 26,189.57

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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.