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Finding the Fourth Proportional to 14,945.40, 20,624.66 and 8,231.01

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Solution

The fourth proportional to 14,945.40, 20,624.66 and 8,231.01 is: 11,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,945.40 : 20,624.66 = 8,231.01 : x
  2. Step 2: Convert to fraction form
    14,945.40/20,624.66 = 8,231.01/x
  3. Step 3: Cross multiply
    14,945.40x = 20,624.66 × 8,231.01
  4. Step 4: Simplify right side
    14,945.40x = 169,761,741.55
  5. Step 5: Solve for x
    x = 169,761,741.55/14,945.40
  6. Step 6: Final answer
    x = 11,358.80

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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.