Home / 15,629.64-21,552.24-12,775.68

Finding the Fourth Proportional to 15,629.64, 21,552.24 and 12,775.68

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Solution

The fourth proportional to 15,629.64, 21,552.24 and 12,775.68 is: 17,616.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.64 : 21,552.24 = 12,775.68 : x
  2. Step 2: Convert to fraction form
    15,629.64/21,552.24 = 12,775.68/x
  3. Step 3: Cross multiply
    15,629.64x = 21,552.24 × 12,775.68
  4. Step 4: Simplify right side
    15,629.64x = 275,344,521.52
  5. Step 5: Solve for x
    x = 275,344,521.52/15,629.64
  6. Step 6: Final answer
    x = 17,616.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.