Home / 18,322.50-25,285.05-9,939

Finding the Fourth Proportional to 18,322.50, 25,285.05 and 9,939

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Solution

The fourth proportional to 18,322.50, 25,285.05 and 9,939 is: 13,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.50 : 25,285.05 = 9,939 : x
  2. Step 2: Convert to fraction form
    18,322.50/25,285.05 = 9,939/x
  3. Step 3: Cross multiply
    18,322.50x = 25,285.05 × 9,939
  4. Step 4: Simplify right side
    18,322.50x = 251,308,111.95
  5. Step 5: Solve for x
    x = 251,308,111.95/18,322.50
  6. Step 6: Final answer
    x = 13,715.82

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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.