Home / 15,358.30-21,195.14-8,644.37

Finding the Fourth Proportional to 15,358.30, 21,195.14 and 8,644.37

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Solution

The fourth proportional to 15,358.30, 21,195.14 and 8,644.37 is: 11,929.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.30 : 21,195.14 = 8,644.37 : x
  2. Step 2: Convert to fraction form
    15,358.30/21,195.14 = 8,644.37/x
  3. Step 3: Cross multiply
    15,358.30x = 21,195.14 × 8,644.37
  4. Step 4: Simplify right side
    15,358.30x = 183,218,483.16
  5. Step 5: Solve for x
    x = 183,218,483.16/15,358.30
  6. Step 6: Final answer
    x = 11,929.61

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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.