Home / 31,287.68-43,190.52-18,710

Finding the Fourth Proportional to 31,287.68, 43,190.52 and 18,710

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Solution

The fourth proportional to 31,287.68, 43,190.52 and 18,710 is: 25,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,287.68 : 43,190.52 = 18,710 : x
  2. Step 2: Convert to fraction form
    31,287.68/43,190.52 = 18,710/x
  3. Step 3: Cross multiply
    31,287.68x = 43,190.52 × 18,710
  4. Step 4: Simplify right side
    31,287.68x = 808,094,629.20
  5. Step 5: Solve for x
    x = 808,094,629.20/31,287.68
  6. Step 6: Final answer
    x = 25,827.89

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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.