Home / 26,267.40-39,370.86-13,129.20

Finding the Fourth Proportional to 26,267.40, 39,370.86 and 13,129.20

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Solution

The fourth proportional to 26,267.40, 39,370.86 and 13,129.20 is: 19,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,267.40 : 39,370.86 = 13,129.20 : x
  2. Step 2: Convert to fraction form
    26,267.40/39,370.86 = 13,129.20/x
  3. Step 3: Cross multiply
    26,267.40x = 39,370.86 × 13,129.20
  4. Step 4: Simplify right side
    26,267.40x = 516,907,895.11
  5. Step 5: Solve for x
    x = 516,907,895.11/26,267.40
  6. Step 6: Final answer
    x = 19,678.69

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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.