Home / 22,859.20-31,548.60-12,788.20

Finding the Fourth Proportional to 22,859.20, 31,548.60 and 12,788.20

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Solution

The fourth proportional to 22,859.20, 31,548.60 and 12,788.20 is: 17,649.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,859.20 : 31,548.60 = 12,788.20 : x
  2. Step 2: Convert to fraction form
    22,859.20/31,548.60 = 12,788.20/x
  3. Step 3: Cross multiply
    22,859.20x = 31,548.60 × 12,788.20
  4. Step 4: Simplify right side
    22,859.20x = 403,449,806.52
  5. Step 5: Solve for x
    x = 403,449,806.52/22,859.20
  6. Step 6: Final answer
    x = 17,649.34

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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.