Home / 15,759.48-21,738.43-9,381.81

Finding the Fourth Proportional to 15,759.48, 21,738.43 and 9,381.81

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Solution

The fourth proportional to 15,759.48, 21,738.43 and 9,381.81 is: 12,941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.48 : 21,738.43 = 9,381.81 : x
  2. Step 2: Convert to fraction form
    15,759.48/21,738.43 = 9,381.81/x
  3. Step 3: Cross multiply
    15,759.48x = 21,738.43 × 9,381.81
  4. Step 4: Simplify right side
    15,759.48x = 203,945,819.96
  5. Step 5: Solve for x
    x = 203,945,819.96/15,759.48
  6. Step 6: Final answer
    x = 12,941.15

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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.