Home / 21,313.92-31,924.80-13,503.36

Finding the Fourth Proportional to 21,313.92, 31,924.80 and 13,503.36

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Solution

The fourth proportional to 21,313.92, 31,924.80 and 13,503.36 is: 20,225.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.92 : 31,924.80 = 13,503.36 : x
  2. Step 2: Convert to fraction form
    21,313.92/31,924.80 = 13,503.36/x
  3. Step 3: Cross multiply
    21,313.92x = 31,924.80 × 13,503.36
  4. Step 4: Simplify right side
    21,313.92x = 431,092,067.33
  5. Step 5: Solve for x
    x = 431,092,067.33/21,313.92
  6. Step 6: Final answer
    x = 20,225.85

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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.