Home / 21,249.09-31,887.68-21,084.93

Finding the Fourth Proportional to 21,249.09, 31,887.68 and 21,084.93

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Solution

The fourth proportional to 21,249.09, 31,887.68 and 21,084.93 is: 31,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.09 : 31,887.68 = 21,084.93 : x
  2. Step 2: Convert to fraction form
    21,249.09/31,887.68 = 21,084.93/x
  3. Step 3: Cross multiply
    21,249.09x = 31,887.68 × 21,084.93
  4. Step 4: Simplify right side
    21,249.09x = 672,349,395.24
  5. Step 5: Solve for x
    x = 672,349,395.24/21,249.09
  6. Step 6: Final answer
    x = 31,641.33

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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.