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Finding the Fourth Proportional to 18,848.12, 28,229.12 and 8,994.32

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Solution

The fourth proportional to 18,848.12, 28,229.12 and 8,994.32 is: 13,470.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.12 : 28,229.12 = 8,994.32 : x
  2. Step 2: Convert to fraction form
    18,848.12/28,229.12 = 8,994.32/x
  3. Step 3: Cross multiply
    18,848.12x = 28,229.12 × 8,994.32
  4. Step 4: Simplify right side
    18,848.12x = 253,901,552.48
  5. Step 5: Solve for x
    x = 253,901,552.48/18,848.12
  6. Step 6: Final answer
    x = 13,470.92

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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.