Home / 26,727.20-36,828.24-18,778.40

Finding the Fourth Proportional to 26,727.20, 36,828.24 and 18,778.40

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Solution

The fourth proportional to 26,727.20, 36,828.24 and 18,778.40 is: 25,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,727.20 : 36,828.24 = 18,778.40 : x
  2. Step 2: Convert to fraction form
    26,727.20/36,828.24 = 18,778.40/x
  3. Step 3: Cross multiply
    26,727.20x = 36,828.24 × 18,778.40
  4. Step 4: Simplify right side
    26,727.20x = 691,575,422.02
  5. Step 5: Solve for x
    x = 691,575,422.02/26,727.20
  6. Step 6: Final answer
    x = 25,875.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.