Home / 26,559.45-39,863.79-13,420.98

Finding the Fourth Proportional to 26,559.45, 39,863.79 and 13,420.98

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Solution

The fourth proportional to 26,559.45, 39,863.79 and 13,420.98 is: 20,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,559.45 : 39,863.79 = 13,420.98 : x
  2. Step 2: Convert to fraction form
    26,559.45/39,863.79 = 13,420.98/x
  3. Step 3: Cross multiply
    26,559.45x = 39,863.79 × 13,420.98
  4. Step 4: Simplify right side
    26,559.45x = 535,011,128.31
  5. Step 5: Solve for x
    x = 535,011,128.31/26,559.45
  6. Step 6: Final answer
    x = 20,143.91

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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.