Home / 15,206.05-20,983.14-8,491.28

Finding the Fourth Proportional to 15,206.05, 20,983.14 and 8,491.28

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Solution

The fourth proportional to 15,206.05, 20,983.14 and 8,491.28 is: 11,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.05 : 20,983.14 = 8,491.28 : x
  2. Step 2: Convert to fraction form
    15,206.05/20,983.14 = 8,491.28/x
  3. Step 3: Cross multiply
    15,206.05x = 20,983.14 × 8,491.28
  4. Step 4: Simplify right side
    15,206.05x = 178,173,612.10
  5. Step 5: Solve for x
    x = 178,173,612.10/15,206.05
  6. Step 6: Final answer
    x = 11,717.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.