Home / 21,043.92-31,607.90-13,160.46

Finding the Fourth Proportional to 21,043.92, 31,607.90 and 13,160.46

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Solution

The fourth proportional to 21,043.92, 31,607.90 and 13,160.46 is: 19,766.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.92 : 31,607.90 = 13,160.46 : x
  2. Step 2: Convert to fraction form
    21,043.92/31,607.90 = 13,160.46/x
  3. Step 3: Cross multiply
    21,043.92x = 31,607.90 × 13,160.46
  4. Step 4: Simplify right side
    21,043.92x = 415,974,503.63
  5. Step 5: Solve for x
    x = 415,974,503.63/21,043.92
  6. Step 6: Final answer
    x = 19,766.97

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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.