Home / 20,754.99-31,135.77-7,616.79

Finding the Fourth Proportional to 20,754.99, 31,135.77 and 7,616.79

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Solution

The fourth proportional to 20,754.99, 31,135.77 and 7,616.79 is: 11,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.99 : 31,135.77 = 7,616.79 : x
  2. Step 2: Convert to fraction form
    20,754.99/31,135.77 = 7,616.79/x
  3. Step 3: Cross multiply
    20,754.99x = 31,135.77 × 7,616.79
  4. Step 4: Simplify right side
    20,754.99x = 237,154,621.58
  5. Step 5: Solve for x
    x = 237,154,621.58/20,754.99
  6. Step 6: Final answer
    x = 11,426.39

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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.