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Finding the Fourth Proportional to 12,444.86, 18,623.42 and 7,767.06

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Solution

The fourth proportional to 12,444.86, 18,623.42 and 7,767.06 is: 11,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444.86 : 18,623.42 = 7,767.06 : x
  2. Step 2: Convert to fraction form
    12,444.86/18,623.42 = 7,767.06/x
  3. Step 3: Cross multiply
    12,444.86x = 18,623.42 × 7,767.06
  4. Step 4: Simplify right side
    12,444.86x = 144,649,181.71
  5. Step 5: Solve for x
    x = 144,649,181.71/12,444.86
  6. Step 6: Final answer
    x = 11,623.21

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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.