Home / 26,859.36-40,289.31-8,139.45

Finding the Fourth Proportional to 26,859.36, 40,289.31 and 8,139.45

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Solution

The fourth proportional to 26,859.36, 40,289.31 and 8,139.45 is: 12,209.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,859.36 : 40,289.31 = 8,139.45 : x
  2. Step 2: Convert to fraction form
    26,859.36/40,289.31 = 8,139.45/x
  3. Step 3: Cross multiply
    26,859.36x = 40,289.31 × 8,139.45
  4. Step 4: Simplify right side
    26,859.36x = 327,932,824.28
  5. Step 5: Solve for x
    x = 327,932,824.28/26,859.36
  6. Step 6: Final answer
    x = 12,209.26

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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.