Home / 10,721.31-16,081.45-2,930.14

Finding the Fourth Proportional to 10,721.31, 16,081.45 and 2,930.14

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Solution

The fourth proportional to 10,721.31, 16,081.45 and 2,930.14 is: 4,395.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.31 : 16,081.45 = 2,930.14 : x
  2. Step 2: Convert to fraction form
    10,721.31/16,081.45 = 2,930.14/x
  3. Step 3: Cross multiply
    10,721.31x = 16,081.45 × 2,930.14
  4. Step 4: Simplify right side
    10,721.31x = 47,120,899.90
  5. Step 5: Solve for x
    x = 47,120,899.90/10,721.31
  6. Step 6: Final answer
    x = 4,395.07

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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.