Home / 20,752.08-28,637.76-11,320.68

Finding the Fourth Proportional to 20,752.08, 28,637.76 and 11,320.68

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Solution

The fourth proportional to 20,752.08, 28,637.76 and 11,320.68 is: 15,622.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.08 : 28,637.76 = 11,320.68 : x
  2. Step 2: Convert to fraction form
    20,752.08/28,637.76 = 11,320.68/x
  3. Step 3: Cross multiply
    20,752.08x = 28,637.76 × 11,320.68
  4. Step 4: Simplify right side
    20,752.08x = 324,198,916.88
  5. Step 5: Solve for x
    x = 324,198,916.88/20,752.08
  6. Step 6: Final answer
    x = 15,622.48

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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.