Home / 20,729.16-28,606.32-11,297.75

Finding the Fourth Proportional to 20,729.16, 28,606.32 and 11,297.75

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Solution

The fourth proportional to 20,729.16, 28,606.32 and 11,297.75 is: 15,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.16 : 28,606.32 = 11,297.75 : x
  2. Step 2: Convert to fraction form
    20,729.16/28,606.32 = 11,297.75/x
  3. Step 3: Cross multiply
    20,729.16x = 28,606.32 × 11,297.75
  4. Step 4: Simplify right side
    20,729.16x = 323,186,908.75
  5. Step 5: Solve for x
    x = 323,186,908.75/20,729.16
  6. Step 6: Final answer
    x = 15,590.93

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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.