Home / 20,972.52-31,434.93-10,961.82

Finding the Fourth Proportional to 20,972.52, 31,434.93 and 10,961.82

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Solution

The fourth proportional to 20,972.52, 31,434.93 and 10,961.82 is: 16,430.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.52 : 31,434.93 = 10,961.82 : x
  2. Step 2: Convert to fraction form
    20,972.52/31,434.93 = 10,961.82/x
  3. Step 3: Cross multiply
    20,972.52x = 31,434.93 × 10,961.82
  4. Step 4: Simplify right side
    20,972.52x = 344,584,044.37
  5. Step 5: Solve for x
    x = 344,584,044.37/20,972.52
  6. Step 6: Final answer
    x = 16,430.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.