Home / 21,680.48-29,922.16-15,650.62

Finding the Fourth Proportional to 21,680.48, 29,922.16 and 15,650.62

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Solution

The fourth proportional to 21,680.48, 29,922.16 and 15,650.62 is: 21,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.48 : 29,922.16 = 15,650.62 : x
  2. Step 2: Convert to fraction form
    21,680.48/29,922.16 = 15,650.62/x
  3. Step 3: Cross multiply
    21,680.48x = 29,922.16 × 15,650.62
  4. Step 4: Simplify right side
    21,680.48x = 468,300,355.74
  5. Step 5: Solve for x
    x = 468,300,355.74/21,680.48
  6. Step 6: Final answer
    x = 21,600.09

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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.