Home / 15,929.70-21,985.38-11,468.22

Finding the Fourth Proportional to 15,929.70, 21,985.38 and 11,468.22

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Solution

The fourth proportional to 15,929.70, 21,985.38 and 11,468.22 is: 15,827.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.70 : 21,985.38 = 11,468.22 : x
  2. Step 2: Convert to fraction form
    15,929.70/21,985.38 = 11,468.22/x
  3. Step 3: Cross multiply
    15,929.70x = 21,985.38 × 11,468.22
  4. Step 4: Simplify right side
    15,929.70x = 252,133,174.62
  5. Step 5: Solve for x
    x = 252,133,174.62/15,929.70
  6. Step 6: Final answer
    x = 15,827.87

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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.