Home / 16,809.78-25,218.30-5,122.68

Finding the Fourth Proportional to 16,809.78, 25,218.30 and 5,122.68

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Solution

The fourth proportional to 16,809.78, 25,218.30 and 5,122.68 is: 7,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,809.78 : 25,218.30 = 5,122.68 : x
  2. Step 2: Convert to fraction form
    16,809.78/25,218.30 = 5,122.68/x
  3. Step 3: Cross multiply
    16,809.78x = 25,218.30 × 5,122.68
  4. Step 4: Simplify right side
    16,809.78x = 129,185,281.04
  5. Step 5: Solve for x
    x = 129,185,281.04/16,809.78
  6. Step 6: Final answer
    x = 7,685.13

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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.