Home / 22,288.65-30,758.30-12,857.22

Finding the Fourth Proportional to 22,288.65, 30,758.30 and 12,857.22

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Solution

The fourth proportional to 22,288.65, 30,758.30 and 12,857.22 is: 17,742.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,288.65 : 30,758.30 = 12,857.22 : x
  2. Step 2: Convert to fraction form
    22,288.65/30,758.30 = 12,857.22/x
  3. Step 3: Cross multiply
    22,288.65x = 30,758.30 × 12,857.22
  4. Step 4: Simplify right side
    22,288.65x = 395,466,165.64
  5. Step 5: Solve for x
    x = 395,466,165.64/22,288.65
  6. Step 6: Final answer
    x = 17,742.94

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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.