Home / 22,693.12-31,317.28-12,621.44

Finding the Fourth Proportional to 22,693.12, 31,317.28 and 12,621.44

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Solution

The fourth proportional to 22,693.12, 31,317.28 and 12,621.44 is: 17,418.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,693.12 : 31,317.28 = 12,621.44 : x
  2. Step 2: Convert to fraction form
    22,693.12/31,317.28 = 12,621.44/x
  3. Step 3: Cross multiply
    22,693.12x = 31,317.28 × 12,621.44
  4. Step 4: Simplify right side
    22,693.12x = 395,269,170.48
  5. Step 5: Solve for x
    x = 395,269,170.48/22,693.12
  6. Step 6: Final answer
    x = 17,418.02

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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.