Home / 21,479.22-32,220.27-7,440.66

Finding the Fourth Proportional to 21,479.22, 32,220.27 and 7,440.66

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Solution

The fourth proportional to 21,479.22, 32,220.27 and 7,440.66 is: 11,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.22 : 32,220.27 = 7,440.66 : x
  2. Step 2: Convert to fraction form
    21,479.22/32,220.27 = 7,440.66/x
  3. Step 3: Cross multiply
    21,479.22x = 32,220.27 × 7,440.66
  4. Step 4: Simplify right side
    21,479.22x = 239,740,074.18
  5. Step 5: Solve for x
    x = 239,740,074.18/21,479.22
  6. Step 6: Final answer
    x = 11,161.49

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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.