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Finding the Fourth Proportional to 25,642.50, 35,334.08 and 18,917.46

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Solution

The fourth proportional to 25,642.50, 35,334.08 and 18,917.46 is: 26,067.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,642.50 : 35,334.08 = 18,917.46 : x
  2. Step 2: Convert to fraction form
    25,642.50/35,334.08 = 18,917.46/x
  3. Step 3: Cross multiply
    25,642.50x = 35,334.08 × 18,917.46
  4. Step 4: Simplify right side
    25,642.50x = 668,431,045.04
  5. Step 5: Solve for x
    x = 668,431,045.04/25,642.50
  6. Step 6: Final answer
    x = 26,067.31

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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.