Home / 21,022.48-31,546.80-7,884.08

Finding the Fourth Proportional to 21,022.48, 31,546.80 and 7,884.08

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Solution

The fourth proportional to 21,022.48, 31,546.80 and 7,884.08 is: 11,831.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.48 : 31,546.80 = 7,884.08 : x
  2. Step 2: Convert to fraction form
    21,022.48/31,546.80 = 7,884.08/x
  3. Step 3: Cross multiply
    21,022.48x = 31,546.80 × 7,884.08
  4. Step 4: Simplify right side
    21,022.48x = 248,717,494.94
  5. Step 5: Solve for x
    x = 248,717,494.94/21,022.48
  6. Step 6: Final answer
    x = 11,831.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.