Home / 31,319.28-43,215.90-17,887.68

Finding the Fourth Proportional to 31,319.28, 43,215.90 and 17,887.68

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Solution

The fourth proportional to 31,319.28, 43,215.90 and 17,887.68 is: 24,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.28 : 43,215.90 = 17,887.68 : x
  2. Step 2: Convert to fraction form
    31,319.28/43,215.90 = 17,887.68/x
  3. Step 3: Cross multiply
    31,319.28x = 43,215.90 × 17,887.68
  4. Step 4: Simplify right side
    31,319.28x = 773,032,190.11
  5. Step 5: Solve for x
    x = 773,032,190.11/31,319.28
  6. Step 6: Final answer
    x = 24,682.31

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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.