Home / 31,333.78-43,240.53-17,909.20

Finding the Fourth Proportional to 31,333.78, 43,240.53 and 17,909.20

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Solution

The fourth proportional to 31,333.78, 43,240.53 and 17,909.20 is: 24,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,333.78 : 43,240.53 = 17,909.20 : x
  2. Step 2: Convert to fraction form
    31,333.78/43,240.53 = 17,909.20/x
  3. Step 3: Cross multiply
    31,333.78x = 43,240.53 × 17,909.20
  4. Step 4: Simplify right side
    31,333.78x = 774,403,299.88
  5. Step 5: Solve for x
    x = 774,403,299.88/31,333.78
  6. Step 6: Final answer
    x = 24,714.65

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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.