Home / 20,519.92-28,317.47-11,088.48

Finding the Fourth Proportional to 20,519.92, 28,317.47 and 11,088.48

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Solution

The fourth proportional to 20,519.92, 28,317.47 and 11,088.48 is: 15,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.92 : 28,317.47 = 11,088.48 : x
  2. Step 2: Convert to fraction form
    20,519.92/28,317.47 = 11,088.48/x
  3. Step 3: Cross multiply
    20,519.92x = 28,317.47 × 11,088.48
  4. Step 4: Simplify right side
    20,519.92x = 313,997,727.47
  5. Step 5: Solve for x
    x = 313,997,727.47/20,519.92
  6. Step 6: Final answer
    x = 15,302.10

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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.