Home / 15,358.96-21,195.41-8,644.69

Finding the Fourth Proportional to 15,358.96, 21,195.41 and 8,644.69

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Solution

The fourth proportional to 15,358.96, 21,195.41 and 8,644.69 is: 11,929.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.96 : 21,195.41 = 8,644.69 : x
  2. Step 2: Convert to fraction form
    15,358.96/21,195.41 = 8,644.69/x
  3. Step 3: Cross multiply
    15,358.96x = 21,195.41 × 8,644.69
  4. Step 4: Simplify right side
    15,358.96x = 183,227,599.67
  5. Step 5: Solve for x
    x = 183,227,599.67/15,358.96
  6. Step 6: Final answer
    x = 11,929.69

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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.