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Finding the Fourth Proportional to 12,451.88, 18,664.86 and 4,657.32

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Solution

The fourth proportional to 12,451.88, 18,664.86 and 4,657.32 is: 6,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.88 : 18,664.86 = 4,657.32 : x
  2. Step 2: Convert to fraction form
    12,451.88/18,664.86 = 4,657.32/x
  3. Step 3: Cross multiply
    12,451.88x = 18,664.86 × 4,657.32
  4. Step 4: Simplify right side
    12,451.88x = 86,928,225.78
  5. Step 5: Solve for x
    x = 86,928,225.78/12,451.88
  6. Step 6: Final answer
    x = 6,981.13

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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.