Home / 21,829.35-32,720.71-12,449.17

Finding the Fourth Proportional to 21,829.35, 32,720.71 and 12,449.17

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Solution

The fourth proportional to 21,829.35, 32,720.71 and 12,449.17 is: 18,660.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.35 : 32,720.71 = 12,449.17 : x
  2. Step 2: Convert to fraction form
    21,829.35/32,720.71 = 12,449.17/x
  3. Step 3: Cross multiply
    21,829.35x = 32,720.71 × 12,449.17
  4. Step 4: Simplify right side
    21,829.35x = 407,345,483.69
  5. Step 5: Solve for x
    x = 407,345,483.69/21,829.35
  6. Step 6: Final answer
    x = 18,660.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.