Home / 21,152.34-31,720.31-11,286.24

Finding the Fourth Proportional to 21,152.34, 31,720.31 and 11,286.24

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Solution

The fourth proportional to 21,152.34, 31,720.31 and 11,286.24 is: 16,924.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.34 : 31,720.31 = 11,286.24 : x
  2. Step 2: Convert to fraction form
    21,152.34/31,720.31 = 11,286.24/x
  3. Step 3: Cross multiply
    21,152.34x = 31,720.31 × 11,286.24
  4. Step 4: Simplify right side
    21,152.34x = 358,002,898.48
  5. Step 5: Solve for x
    x = 358,002,898.48/21,152.34
  6. Step 6: Final answer
    x = 16,924.98

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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.