Home / 10,135.80-15,206.16-5,125.80

Finding the Fourth Proportional to 10,135.80, 15,206.16 and 5,125.80

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Solution

The fourth proportional to 10,135.80, 15,206.16 and 5,125.80 is: 7,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.80 : 15,206.16 = 5,125.80 : x
  2. Step 2: Convert to fraction form
    10,135.80/15,206.16 = 5,125.80/x
  3. Step 3: Cross multiply
    10,135.80x = 15,206.16 × 5,125.80
  4. Step 4: Simplify right side
    10,135.80x = 77,943,734.93
  5. Step 5: Solve for x
    x = 77,943,734.93/10,135.80
  6. Step 6: Final answer
    x = 7,689.94

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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.