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Finding the Fourth Proportional to 26,443.29, 39,664.95 and 8,913.15

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Solution

The fourth proportional to 26,443.29, 39,664.95 and 8,913.15 is: 13,369.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,443.29 : 39,664.95 = 8,913.15 : x
  2. Step 2: Convert to fraction form
    26,443.29/39,664.95 = 8,913.15/x
  3. Step 3: Cross multiply
    26,443.29x = 39,664.95 × 8,913.15
  4. Step 4: Simplify right side
    26,443.29x = 353,539,649.09
  5. Step 5: Solve for x
    x = 353,539,649.09/26,443.29
  6. Step 6: Final answer
    x = 13,369.73

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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.