Home / 21,097.05-31,649.22-8,623.86

Finding the Fourth Proportional to 21,097.05, 31,649.22 and 8,623.86

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Solution

The fourth proportional to 21,097.05, 31,649.22 and 8,623.86 is: 12,937.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.05 : 31,649.22 = 8,623.86 : x
  2. Step 2: Convert to fraction form
    21,097.05/31,649.22 = 8,623.86/x
  3. Step 3: Cross multiply
    21,097.05x = 31,649.22 × 8,623.86
  4. Step 4: Simplify right side
    21,097.05x = 272,938,442.39
  5. Step 5: Solve for x
    x = 272,938,442.39/21,097.05
  6. Step 6: Final answer
    x = 12,937.28

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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.