Home / 15,206.20-20,984.58-8,491.69

Finding the Fourth Proportional to 15,206.20, 20,984.58 and 8,491.69

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Solution

The fourth proportional to 15,206.20, 20,984.58 and 8,491.69 is: 11,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.20 : 20,984.58 = 8,491.69 : x
  2. Step 2: Convert to fraction form
    15,206.20/20,984.58 = 8,491.69/x
  3. Step 3: Cross multiply
    15,206.20x = 20,984.58 × 8,491.69
  4. Step 4: Simplify right side
    15,206.20x = 178,194,548.14
  5. Step 5: Solve for x
    x = 178,194,548.14/15,206.20
  6. Step 6: Final answer
    x = 11,718.55

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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.