Home / 21,190.68-31,747.26-9,925.34

Finding the Fourth Proportional to 21,190.68, 31,747.26 and 9,925.34

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Solution

The fourth proportional to 21,190.68, 31,747.26 and 9,925.34 is: 14,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.68 : 31,747.26 = 9,925.34 : x
  2. Step 2: Convert to fraction form
    21,190.68/31,747.26 = 9,925.34/x
  3. Step 3: Cross multiply
    21,190.68x = 31,747.26 × 9,925.34
  4. Step 4: Simplify right side
    21,190.68x = 315,102,349.57
  5. Step 5: Solve for x
    x = 315,102,349.57/21,190.68
  6. Step 6: Final answer
    x = 14,869.86

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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.