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Finding the Fourth Proportional to 40,000.86, 60,015.84 and 21,282.54

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Solution

The fourth proportional to 40,000.86, 60,015.84 and 21,282.54 is: 31,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,000.86 : 60,015.84 = 21,282.54 : x
  2. Step 2: Convert to fraction form
    40,000.86/60,015.84 = 21,282.54/x
  3. Step 3: Cross multiply
    40,000.86x = 60,015.84 × 21,282.54
  4. Step 4: Simplify right side
    40,000.86x = 1,277,289,515.43
  5. Step 5: Solve for x
    x = 1,277,289,515.43/40,000.86
  6. Step 6: Final answer
    x = 31,931.55

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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.