Home / 21,649.22-29,855.22-13,152.74

Finding the Fourth Proportional to 21,649.22, 29,855.22 and 13,152.74

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Solution

The fourth proportional to 21,649.22, 29,855.22 and 13,152.74 is: 18,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.22 : 29,855.22 = 13,152.74 : x
  2. Step 2: Convert to fraction form
    21,649.22/29,855.22 = 13,152.74/x
  3. Step 3: Cross multiply
    21,649.22x = 29,855.22 × 13,152.74
  4. Step 4: Simplify right side
    21,649.22x = 392,677,946.30
  5. Step 5: Solve for x
    x = 392,677,946.30/21,649.22
  6. Step 6: Final answer
    x = 18,138.20

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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.