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Finding the Fourth Proportional to 26,043.60, 39,000.60 and 20,859.60

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Solution

The fourth proportional to 26,043.60, 39,000.60 and 20,859.60 is: 31,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,043.60 : 39,000.60 = 20,859.60 : x
  2. Step 2: Convert to fraction form
    26,043.60/39,000.60 = 20,859.60/x
  3. Step 3: Cross multiply
    26,043.60x = 39,000.60 × 20,859.60
  4. Step 4: Simplify right side
    26,043.60x = 813,536,915.76
  5. Step 5: Solve for x
    x = 813,536,915.76/26,043.60
  6. Step 6: Final answer
    x = 31,237.50

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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.