Home / 18,360.87-25,338.38-9,977.91

Finding the Fourth Proportional to 18,360.87, 25,338.38 and 9,977.91

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Solution

The fourth proportional to 18,360.87, 25,338.38 and 9,977.91 is: 13,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.87 : 25,338.38 = 9,977.91 : x
  2. Step 2: Convert to fraction form
    18,360.87/25,338.38 = 9,977.91/x
  3. Step 3: Cross multiply
    18,360.87x = 25,338.38 × 9,977.91
  4. Step 4: Simplify right side
    18,360.87x = 252,824,025.30
  5. Step 5: Solve for x
    x = 252,824,025.30/18,360.87
  6. Step 6: Final answer
    x = 13,769.72

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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.