Home / 21,865.52-30,174.40-11,929.52

Finding the Fourth Proportional to 21,865.52, 30,174.40 and 11,929.52

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Solution

The fourth proportional to 21,865.52, 30,174.40 and 11,929.52 is: 16,462.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.52 : 30,174.40 = 11,929.52 : x
  2. Step 2: Convert to fraction form
    21,865.52/30,174.40 = 11,929.52/x
  3. Step 3: Cross multiply
    21,865.52x = 30,174.40 × 11,929.52
  4. Step 4: Simplify right side
    21,865.52x = 359,966,108.29
  5. Step 5: Solve for x
    x = 359,966,108.29/21,865.52
  6. Step 6: Final answer
    x = 16,462.73

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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.