Home / 15,722.10-21,698.33-9,009.90

Finding the Fourth Proportional to 15,722.10, 21,698.33 and 9,009.90

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Solution

The fourth proportional to 15,722.10, 21,698.33 and 9,009.90 is: 12,434.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.10 : 21,698.33 = 9,009.90 : x
  2. Step 2: Convert to fraction form
    15,722.10/21,698.33 = 9,009.90/x
  3. Step 3: Cross multiply
    15,722.10x = 21,698.33 × 9,009.90
  4. Step 4: Simplify right side
    15,722.10x = 195,499,738.42
  5. Step 5: Solve for x
    x = 195,499,738.42/15,722.10
  6. Step 6: Final answer
    x = 12,434.71

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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.