Home / 26,215.12-39,294.99-18,815.57

Finding the Fourth Proportional to 26,215.12, 39,294.99 and 18,815.57

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Solution

The fourth proportional to 26,215.12, 39,294.99 and 18,815.57 is: 28,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,215.12 : 39,294.99 = 18,815.57 : x
  2. Step 2: Convert to fraction form
    26,215.12/39,294.99 = 18,815.57/x
  3. Step 3: Cross multiply
    26,215.12x = 39,294.99 × 18,815.57
  4. Step 4: Simplify right side
    26,215.12x = 739,357,634.99
  5. Step 5: Solve for x
    x = 739,357,634.99/26,215.12
  6. Step 6: Final answer
    x = 28,203.48

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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.