Home / 14,967.18-20,656.62-8,679.42

Finding the Fourth Proportional to 14,967.18, 20,656.62 and 8,679.42

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Solution

The fourth proportional to 14,967.18, 20,656.62 and 8,679.42 is: 11,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,967.18 : 20,656.62 = 8,679.42 : x
  2. Step 2: Convert to fraction form
    14,967.18/20,656.62 = 8,679.42/x
  3. Step 3: Cross multiply
    14,967.18x = 20,656.62 × 8,679.42
  4. Step 4: Simplify right side
    14,967.18x = 179,287,480.76
  5. Step 5: Solve for x
    x = 179,287,480.76/14,967.18
  6. Step 6: Final answer
    x = 11,978.71

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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.