Home / 31,564.88-43,557-18,135.44

Finding the Fourth Proportional to 31,564.88, 43,557 and 18,135.44

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Solution

The fourth proportional to 31,564.88, 43,557 and 18,135.44 is: 25,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.88 : 43,557 = 18,135.44 : x
  2. Step 2: Convert to fraction form
    31,564.88/43,557 = 18,135.44/x
  3. Step 3: Cross multiply
    31,564.88x = 43,557 × 18,135.44
  4. Step 4: Simplify right side
    31,564.88x = 789,925,360.08
  5. Step 5: Solve for x
    x = 789,925,360.08/31,564.88
  6. Step 6: Final answer
    x = 25,025.45

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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.