Home / 21,209.06-31,800.51-7,167.76

Finding the Fourth Proportional to 21,209.06, 31,800.51 and 7,167.76

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Solution

The fourth proportional to 21,209.06, 31,800.51 and 7,167.76 is: 10,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.06 : 31,800.51 = 7,167.76 : x
  2. Step 2: Convert to fraction form
    21,209.06/31,800.51 = 7,167.76/x
  3. Step 3: Cross multiply
    21,209.06x = 31,800.51 × 7,167.76
  4. Step 4: Simplify right side
    21,209.06x = 227,938,423.56
  5. Step 5: Solve for x
    x = 227,938,423.56/21,209.06
  6. Step 6: Final answer
    x = 10,747.22

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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.