Home / 20,210.33-27,888.81-11,135.29

Finding the Fourth Proportional to 20,210.33, 27,888.81 and 11,135.29

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Solution

The fourth proportional to 20,210.33, 27,888.81 and 11,135.29 is: 15,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.33 : 27,888.81 = 11,135.29 : x
  2. Step 2: Convert to fraction form
    20,210.33/27,888.81 = 11,135.29/x
  3. Step 3: Cross multiply
    20,210.33x = 27,888.81 × 11,135.29
  4. Step 4: Simplify right side
    20,210.33x = 310,549,987.10
  5. Step 5: Solve for x
    x = 310,549,987.10/20,210.33
  6. Step 6: Final answer
    x = 15,365.90

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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.