Home / 31,718.95-43,776.81-18,287.57

Finding the Fourth Proportional to 31,718.95, 43,776.81 and 18,287.57

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Solution

The fourth proportional to 31,718.95, 43,776.81 and 18,287.57 is: 25,239.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.95 : 43,776.81 = 18,287.57 : x
  2. Step 2: Convert to fraction form
    31,718.95/43,776.81 = 18,287.57/x
  3. Step 3: Cross multiply
    31,718.95x = 43,776.81 × 18,287.57
  4. Step 4: Simplify right side
    31,718.95x = 800,571,477.25
  5. Step 5: Solve for x
    x = 800,571,477.25/31,718.95
  6. Step 6: Final answer
    x = 25,239.53

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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.