Home / 14,499.12-20,008.80-8,211.36

Finding the Fourth Proportional to 14,499.12, 20,008.80 and 8,211.36

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Solution

The fourth proportional to 14,499.12, 20,008.80 and 8,211.36 is: 11,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,499.12 : 20,008.80 = 8,211.36 : x
  2. Step 2: Convert to fraction form
    14,499.12/20,008.80 = 8,211.36/x
  3. Step 3: Cross multiply
    14,499.12x = 20,008.80 × 8,211.36
  4. Step 4: Simplify right side
    14,499.12x = 164,299,459.97
  5. Step 5: Solve for x
    x = 164,299,459.97/14,499.12
  6. Step 6: Final answer
    x = 11,331.68

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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.