Home / 20,085.51-27,719.66-11,135.82

Finding the Fourth Proportional to 20,085.51, 27,719.66 and 11,135.82

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Solution

The fourth proportional to 20,085.51, 27,719.66 and 11,135.82 is: 15,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.51 : 27,719.66 = 11,135.82 : x
  2. Step 2: Convert to fraction form
    20,085.51/27,719.66 = 11,135.82/x
  3. Step 3: Cross multiply
    20,085.51x = 27,719.66 × 11,135.82
  4. Step 4: Simplify right side
    20,085.51x = 308,681,172.06
  5. Step 5: Solve for x
    x = 308,681,172.06/20,085.51
  6. Step 6: Final answer
    x = 15,368.35

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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.