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Finding the Fourth Proportional to 32,378.90, 44,678.90 and 18,766.86

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Solution

The fourth proportional to 32,378.90, 44,678.90 and 18,766.86 is: 25,895.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,378.90 : 44,678.90 = 18,766.86 : x
  2. Step 2: Convert to fraction form
    32,378.90/44,678.90 = 18,766.86/x
  3. Step 3: Cross multiply
    32,378.90x = 44,678.90 × 18,766.86
  4. Step 4: Simplify right side
    32,378.90x = 838,482,661.25
  5. Step 5: Solve for x
    x = 838,482,661.25/32,378.90
  6. Step 6: Final answer
    x = 25,895.96

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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.