Home / 14,508.13-20,021.61-8,220.46

Finding the Fourth Proportional to 14,508.13, 20,021.61 and 8,220.46

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Solution

The fourth proportional to 14,508.13, 20,021.61 and 8,220.46 is: 11,344.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,508.13 : 20,021.61 = 8,220.46 : x
  2. Step 2: Convert to fraction form
    14,508.13/20,021.61 = 8,220.46/x
  3. Step 3: Cross multiply
    14,508.13x = 20,021.61 × 8,220.46
  4. Step 4: Simplify right side
    14,508.13x = 164,586,844.14
  5. Step 5: Solve for x
    x = 164,586,844.14/14,508.13
  6. Step 6: Final answer
    x = 11,344.46

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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.