Home / 16,816.16-25,228.24-5,128.64

Finding the Fourth Proportional to 16,816.16, 25,228.24 and 5,128.64

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Solution

The fourth proportional to 16,816.16, 25,228.24 and 5,128.64 is: 7,694.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,816.16 : 25,228.24 = 5,128.64 : x
  2. Step 2: Convert to fraction form
    16,816.16/25,228.24 = 5,128.64/x
  3. Step 3: Cross multiply
    16,816.16x = 25,228.24 × 5,128.64
  4. Step 4: Simplify right side
    16,816.16x = 129,386,560.79
  5. Step 5: Solve for x
    x = 129,386,560.79/16,816.16
  6. Step 6: Final answer
    x = 7,694.18

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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.