Home / 22,720.88-31,355.55-12,512.99

Finding the Fourth Proportional to 22,720.88, 31,355.55 and 12,512.99

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Solution

The fourth proportional to 22,720.88, 31,355.55 and 12,512.99 is: 17,268.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.88 : 31,355.55 = 12,512.99 : x
  2. Step 2: Convert to fraction form
    22,720.88/31,355.55 = 12,512.99/x
  3. Step 3: Cross multiply
    22,720.88x = 31,355.55 × 12,512.99
  4. Step 4: Simplify right side
    22,720.88x = 392,351,526.82
  5. Step 5: Solve for x
    x = 392,351,526.82/22,720.88
  6. Step 6: Final answer
    x = 17,268.33

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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.