Home / 31,720.95-43,773.75-18,292.77

Finding the Fourth Proportional to 31,720.95, 43,773.75 and 18,292.77

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Solution

The fourth proportional to 31,720.95, 43,773.75 and 18,292.77 is: 25,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.95 : 43,773.75 = 18,292.77 : x
  2. Step 2: Convert to fraction form
    31,720.95/43,773.75 = 18,292.77/x
  3. Step 3: Cross multiply
    31,720.95x = 43,773.75 × 18,292.77
  4. Step 4: Simplify right side
    31,720.95x = 800,743,140.79
  5. Step 5: Solve for x
    x = 800,743,140.79/31,720.95
  6. Step 6: Final answer
    x = 25,243.35

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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.