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Finding the Fourth Proportional to 38,811.20, 58,222.20 and 15,432.20

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Solution

The fourth proportional to 38,811.20, 58,222.20 and 15,432.20 is: 23,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,811.20 : 58,222.20 = 15,432.20 : x
  2. Step 2: Convert to fraction form
    38,811.20/58,222.20 = 15,432.20/x
  3. Step 3: Cross multiply
    38,811.20x = 58,222.20 × 15,432.20
  4. Step 4: Simplify right side
    38,811.20x = 898,496,634.84
  5. Step 5: Solve for x
    x = 898,496,634.84/38,811.20
  6. Step 6: Final answer
    x = 23,150.45

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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.