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Finding the Fourth Proportional to 26,609.71, 39,915.78 and 9,079.69

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Solution

The fourth proportional to 26,609.71, 39,915.78 and 9,079.69 is: 13,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,609.71 : 39,915.78 = 9,079.69 : x
  2. Step 2: Convert to fraction form
    26,609.71/39,915.78 = 9,079.69/x
  3. Step 3: Cross multiply
    26,609.71x = 39,915.78 × 9,079.69
  4. Step 4: Simplify right side
    26,609.71x = 362,422,908.51
  5. Step 5: Solve for x
    x = 362,422,908.51/26,609.71
  6. Step 6: Final answer
    x = 13,619.95

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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.