Home / 22,739.90-31,153.77-21,887.63

Finding the Fourth Proportional to 22,739.90, 31,153.77 and 21,887.63

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Solution

The fourth proportional to 22,739.90, 31,153.77 and 21,887.63 is: 29,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,739.90 : 31,153.77 = 21,887.63 : x
  2. Step 2: Convert to fraction form
    22,739.90/31,153.77 = 21,887.63/x
  3. Step 3: Cross multiply
    22,739.90x = 31,153.77 × 21,887.63
  4. Step 4: Simplify right side
    22,739.90x = 681,882,327.16
  5. Step 5: Solve for x
    x = 681,882,327.16/22,739.90
  6. Step 6: Final answer
    x = 29,986.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.