Home / 26,642.94-39,976.20-13,989.72

Finding the Fourth Proportional to 26,642.94, 39,976.20 and 13,989.72

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Solution

The fourth proportional to 26,642.94, 39,976.20 and 13,989.72 is: 20,990.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,642.94 : 39,976.20 = 13,989.72 : x
  2. Step 2: Convert to fraction form
    26,642.94/39,976.20 = 13,989.72/x
  3. Step 3: Cross multiply
    26,642.94x = 39,976.20 × 13,989.72
  4. Step 4: Simplify right side
    26,642.94x = 559,255,844.66
  5. Step 5: Solve for x
    x = 559,255,844.66/26,642.94
  6. Step 6: Final answer
    x = 20,990.77

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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.