Home / 22,389.28-30,889.14-12,826.64

Finding the Fourth Proportional to 22,389.28, 30,889.14 and 12,826.64

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Solution

The fourth proportional to 22,389.28, 30,889.14 and 12,826.64 is: 17,696.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,389.28 : 30,889.14 = 12,826.64 : x
  2. Step 2: Convert to fraction form
    22,389.28/30,889.14 = 12,826.64/x
  3. Step 3: Cross multiply
    22,389.28x = 30,889.14 × 12,826.64
  4. Step 4: Simplify right side
    22,389.28x = 396,203,878.69
  5. Step 5: Solve for x
    x = 396,203,878.69/22,389.28
  6. Step 6: Final answer
    x = 17,696.14

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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.