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Finding the Fourth Proportional to 26,491.36, 39,742.89 and 8,960.80

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Solution

The fourth proportional to 26,491.36, 39,742.89 and 8,960.80 is: 13,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,491.36 : 39,742.89 = 8,960.80 : x
  2. Step 2: Convert to fraction form
    26,491.36/39,742.89 = 8,960.80/x
  3. Step 3: Cross multiply
    26,491.36x = 39,742.89 × 8,960.80
  4. Step 4: Simplify right side
    26,491.36x = 356,128,088.71
  5. Step 5: Solve for x
    x = 356,128,088.71/26,491.36
  6. Step 6: Final answer
    x = 13,443.18

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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.