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Finding the Fourth Proportional to 26,614.64, 39,915.14 and 7,890.30

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Solution

The fourth proportional to 26,614.64, 39,915.14 and 7,890.30 is: 11,833.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,614.64 : 39,915.14 = 7,890.30 : x
  2. Step 2: Convert to fraction form
    26,614.64/39,915.14 = 7,890.30/x
  3. Step 3: Cross multiply
    26,614.64x = 39,915.14 × 7,890.30
  4. Step 4: Simplify right side
    26,614.64x = 314,942,389.69
  5. Step 5: Solve for x
    x = 314,942,389.69/26,614.64
  6. Step 6: Final answer
    x = 11,833.43

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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.