Home / 26,385.60-39,520.80-21,201.60

Finding the Fourth Proportional to 26,385.60, 39,520.80 and 21,201.60

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Solution

The fourth proportional to 26,385.60, 39,520.80 and 21,201.60 is: 31,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,385.60 : 39,520.80 = 21,201.60 : x
  2. Step 2: Convert to fraction form
    26,385.60/39,520.80 = 21,201.60/x
  3. Step 3: Cross multiply
    26,385.60x = 39,520.80 × 21,201.60
  4. Step 4: Simplify right side
    26,385.60x = 837,904,193.28
  5. Step 5: Solve for x
    x = 837,904,193.28/26,385.60
  6. Step 6: Final answer
    x = 31,756.12

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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.