Home / 21,245.63-31,868.45-10,118.58

Finding the Fourth Proportional to 21,245.63, 31,868.45 and 10,118.58

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Solution

The fourth proportional to 21,245.63, 31,868.45 and 10,118.58 is: 15,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.63 : 31,868.45 = 10,118.58 : x
  2. Step 2: Convert to fraction form
    21,245.63/31,868.45 = 10,118.58/x
  3. Step 3: Cross multiply
    21,245.63x = 31,868.45 × 10,118.58
  4. Step 4: Simplify right side
    21,245.63x = 322,463,410.21
  5. Step 5: Solve for x
    x = 322,463,410.21/21,245.63
  6. Step 6: Final answer
    x = 15,177.87

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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.