Home / 26,276.94-39,359.52-21,257.78

Finding the Fourth Proportional to 26,276.94, 39,359.52 and 21,257.78

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Solution

The fourth proportional to 26,276.94, 39,359.52 and 21,257.78 is: 31,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,276.94 : 39,359.52 = 21,257.78 : x
  2. Step 2: Convert to fraction form
    26,276.94/39,359.52 = 21,257.78/x
  3. Step 3: Cross multiply
    26,276.94x = 39,359.52 × 21,257.78
  4. Step 4: Simplify right side
    26,276.94x = 836,695,820.27
  5. Step 5: Solve for x
    x = 836,695,820.27/26,276.94
  6. Step 6: Final answer
    x = 31,841.45

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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.