Home / 22,515.72-31,053.96-21,006.66

Finding the Fourth Proportional to 22,515.72, 31,053.96 and 21,006.66

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Solution

The fourth proportional to 22,515.72, 31,053.96 and 21,006.66 is: 28,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.72 : 31,053.96 = 21,006.66 : x
  2. Step 2: Convert to fraction form
    22,515.72/31,053.96 = 21,006.66/x
  3. Step 3: Cross multiply
    22,515.72x = 31,053.96 × 21,006.66
  4. Step 4: Simplify right side
    22,515.72x = 652,339,979.37
  5. Step 5: Solve for x
    x = 652,339,979.37/22,515.72
  6. Step 6: Final answer
    x = 28,972.65

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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.