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Finding the Fourth Proportional to 30,693.92, 45,952.79 and 18,927.86

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Solution

The fourth proportional to 30,693.92, 45,952.79 and 18,927.86 is: 28,337.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,693.92 : 45,952.79 = 18,927.86 : x
  2. Step 2: Convert to fraction form
    30,693.92/45,952.79 = 18,927.86/x
  3. Step 3: Cross multiply
    30,693.92x = 45,952.79 × 18,927.86
  4. Step 4: Simplify right side
    30,693.92x = 869,787,651.33
  5. Step 5: Solve for x
    x = 869,787,651.33/30,693.92
  6. Step 6: Final answer
    x = 28,337.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.