Home / 20,230.16-27,918.27-11,279.57

Finding the Fourth Proportional to 20,230.16, 27,918.27 and 11,279.57

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Solution

The fourth proportional to 20,230.16, 27,918.27 and 11,279.57 is: 15,566.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.16 : 27,918.27 = 11,279.57 : x
  2. Step 2: Convert to fraction form
    20,230.16/27,918.27 = 11,279.57/x
  3. Step 3: Cross multiply
    20,230.16x = 27,918.27 × 11,279.57
  4. Step 4: Simplify right side
    20,230.16x = 314,905,941.15
  5. Step 5: Solve for x
    x = 314,905,941.15/20,230.16
  6. Step 6: Final answer
    x = 15,566.17

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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.