Home / 22,129.80-30,539.19-12,697.75

Finding the Fourth Proportional to 22,129.80, 30,539.19 and 12,697.75

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Solution

The fourth proportional to 22,129.80, 30,539.19 and 12,697.75 is: 17,522.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,129.80 : 30,539.19 = 12,697.75 : x
  2. Step 2: Convert to fraction form
    22,129.80/30,539.19 = 12,697.75/x
  3. Step 3: Cross multiply
    22,129.80x = 30,539.19 × 12,697.75
  4. Step 4: Simplify right side
    22,129.80x = 387,778,999.82
  5. Step 5: Solve for x
    x = 387,778,999.82/22,129.80
  6. Step 6: Final answer
    x = 17,522.93

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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.