Home / 15,778.26-21,774.18-8,704.62

Finding the Fourth Proportional to 15,778.26, 21,774.18 and 8,704.62

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Solution

The fourth proportional to 15,778.26, 21,774.18 and 8,704.62 is: 12,012.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.26 : 21,774.18 = 8,704.62 : x
  2. Step 2: Convert to fraction form
    15,778.26/21,774.18 = 8,704.62/x
  3. Step 3: Cross multiply
    15,778.26x = 21,774.18 × 8,704.62
  4. Step 4: Simplify right side
    15,778.26x = 189,535,962.71
  5. Step 5: Solve for x
    x = 189,535,962.71/15,778.26
  6. Step 6: Final answer
    x = 12,012.48

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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.