Home / 21,031.55-31,535.51-6,984.06

Finding the Fourth Proportional to 21,031.55, 31,535.51 and 6,984.06

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Solution

The fourth proportional to 21,031.55, 31,535.51 and 6,984.06 is: 10,472.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.55 : 31,535.51 = 6,984.06 : x
  2. Step 2: Convert to fraction form
    21,031.55/31,535.51 = 6,984.06/x
  3. Step 3: Cross multiply
    21,031.55x = 31,535.51 × 6,984.06
  4. Step 4: Simplify right side
    21,031.55x = 220,245,780.08
  5. Step 5: Solve for x
    x = 220,245,780.08/21,031.55
  6. Step 6: Final answer
    x = 10,472.16

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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.