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Finding the Fourth Proportional to 12,424.91, 18,612.77 and 8,045.45

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Solution

The fourth proportional to 12,424.91, 18,612.77 and 8,045.45 is: 12,052.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,424.91 : 18,612.77 = 8,045.45 : x
  2. Step 2: Convert to fraction form
    12,424.91/18,612.77 = 8,045.45/x
  3. Step 3: Cross multiply
    12,424.91x = 18,612.77 × 8,045.45
  4. Step 4: Simplify right side
    12,424.91x = 149,748,070.17
  5. Step 5: Solve for x
    x = 149,748,070.17/12,424.91
  6. Step 6: Final answer
    x = 12,052.25

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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.