Home / 26,439.80-36,458.42-20,078.06

Finding the Fourth Proportional to 26,439.80, 36,458.42 and 20,078.06

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Solution

The fourth proportional to 26,439.80, 36,458.42 and 20,078.06 is: 27,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,439.80 : 36,458.42 = 20,078.06 : x
  2. Step 2: Convert to fraction form
    26,439.80/36,458.42 = 20,078.06/x
  3. Step 3: Cross multiply
    26,439.80x = 36,458.42 × 20,078.06
  4. Step 4: Simplify right side
    26,439.80x = 732,014,061.58
  5. Step 5: Solve for x
    x = 732,014,061.58/26,439.80
  6. Step 6: Final answer
    x = 27,686.07

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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.