Home / 21,177.66-31,767.57-8,031.12

Finding the Fourth Proportional to 21,177.66, 31,767.57 and 8,031.12

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Solution

The fourth proportional to 21,177.66, 31,767.57 and 8,031.12 is: 12,047.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.66 : 31,767.57 = 8,031.12 : x
  2. Step 2: Convert to fraction form
    21,177.66/31,767.57 = 8,031.12/x
  3. Step 3: Cross multiply
    21,177.66x = 31,767.57 × 8,031.12
  4. Step 4: Simplify right side
    21,177.66x = 255,129,166.78
  5. Step 5: Solve for x
    x = 255,129,166.78/21,177.66
  6. Step 6: Final answer
    x = 12,047.09

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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.