Home / 31,718.70-43,776.47-18,287.33

Finding the Fourth Proportional to 31,718.70, 43,776.47 and 18,287.33

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Solution

The fourth proportional to 31,718.70, 43,776.47 and 18,287.33 is: 25,239.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.70 : 43,776.47 = 18,287.33 : x
  2. Step 2: Convert to fraction form
    31,718.70/43,776.47 = 18,287.33/x
  3. Step 3: Cross multiply
    31,718.70x = 43,776.47 × 18,287.33
  4. Step 4: Simplify right side
    31,718.70x = 800,554,442.81
  5. Step 5: Solve for x
    x = 800,554,442.81/31,718.70
  6. Step 6: Final answer
    x = 25,239.19

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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.