Home / 20,751.51-28,637.33-11,320.23

Finding the Fourth Proportional to 20,751.51, 28,637.33 and 11,320.23

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Solution

The fourth proportional to 20,751.51, 28,637.33 and 11,320.23 is: 15,622.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.51 : 28,637.33 = 11,320.23 : x
  2. Step 2: Convert to fraction form
    20,751.51/28,637.33 = 11,320.23/x
  3. Step 3: Cross multiply
    20,751.51x = 28,637.33 × 11,320.23
  4. Step 4: Simplify right side
    20,751.51x = 324,181,105.58
  5. Step 5: Solve for x
    x = 324,181,105.58/20,751.51
  6. Step 6: Final answer
    x = 15,622.05

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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.