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Finding the Fourth Proportional to 48,015.75, 72,014.88 and 12,947.19

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Solution

The fourth proportional to 48,015.75, 72,014.88 and 12,947.19 is: 19,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,015.75 : 72,014.88 = 12,947.19 : x
  2. Step 2: Convert to fraction form
    48,015.75/72,014.88 = 12,947.19/x
  3. Step 3: Cross multiply
    48,015.75x = 72,014.88 × 12,947.19
  4. Step 4: Simplify right side
    48,015.75x = 932,390,334.19
  5. Step 5: Solve for x
    x = 932,390,334.19/48,015.75
  6. Step 6: Final answer
    x = 19,418.43

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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.