Home / 21,981.72-30,334.56-12,550.26

Finding the Fourth Proportional to 21,981.72, 30,334.56 and 12,550.26

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Solution

The fourth proportional to 21,981.72, 30,334.56 and 12,550.26 is: 17,319.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.72 : 30,334.56 = 12,550.26 : x
  2. Step 2: Convert to fraction form
    21,981.72/30,334.56 = 12,550.26/x
  3. Step 3: Cross multiply
    21,981.72x = 30,334.56 × 12,550.26
  4. Step 4: Simplify right side
    21,981.72x = 380,706,614.99
  5. Step 5: Solve for x
    x = 380,706,614.99/21,981.72
  6. Step 6: Final answer
    x = 17,319.24

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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.