Home / 21,169.08-31,750.92-7,126.92

Finding the Fourth Proportional to 21,169.08, 31,750.92 and 7,126.92

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Solution

The fourth proportional to 21,169.08, 31,750.92 and 7,126.92 is: 10,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.08 : 31,750.92 = 7,126.92 : x
  2. Step 2: Convert to fraction form
    21,169.08/31,750.92 = 7,126.92/x
  3. Step 3: Cross multiply
    21,169.08x = 31,750.92 × 7,126.92
  4. Step 4: Simplify right side
    21,169.08x = 226,286,266.77
  5. Step 5: Solve for x
    x = 226,286,266.77/21,169.08
  6. Step 6: Final answer
    x = 10,689.47

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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.