Home / 20,752.43-28,638.62-11,320.98

Finding the Fourth Proportional to 20,752.43, 28,638.62 and 11,320.98

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Solution

The fourth proportional to 20,752.43, 28,638.62 and 11,320.98 is: 15,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.43 : 28,638.62 = 11,320.98 : x
  2. Step 2: Convert to fraction form
    20,752.43/28,638.62 = 11,320.98/x
  3. Step 3: Cross multiply
    20,752.43x = 28,638.62 × 11,320.98
  4. Step 4: Simplify right side
    20,752.43x = 324,217,187.64
  5. Step 5: Solve for x
    x = 324,217,187.64/20,752.43
  6. Step 6: Final answer
    x = 15,623.10

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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.