Home / 31,213.62-43,066.80-18,466.20

Finding the Fourth Proportional to 31,213.62, 43,066.80 and 18,466.20

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Solution

The fourth proportional to 31,213.62, 43,066.80 and 18,466.20 is: 25,478.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,213.62 : 43,066.80 = 18,466.20 : x
  2. Step 2: Convert to fraction form
    31,213.62/43,066.80 = 18,466.20/x
  3. Step 3: Cross multiply
    31,213.62x = 43,066.80 × 18,466.20
  4. Step 4: Simplify right side
    31,213.62x = 795,280,142.16
  5. Step 5: Solve for x
    x = 795,280,142.16/31,213.62
  6. Step 6: Final answer
    x = 25,478.63

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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.