Home / 13,156.10-18,155.42-7,490.56

Finding the Fourth Proportional to 13,156.10, 18,155.42 and 7,490.56

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Solution

The fourth proportional to 13,156.10, 18,155.42 and 7,490.56 is: 10,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.10 : 18,155.42 = 7,490.56 : x
  2. Step 2: Convert to fraction form
    13,156.10/18,155.42 = 7,490.56/x
  3. Step 3: Cross multiply
    13,156.10x = 18,155.42 × 7,490.56
  4. Step 4: Simplify right side
    13,156.10x = 135,994,179.99
  5. Step 5: Solve for x
    x = 135,994,179.99/13,156.10
  6. Step 6: Final answer
    x = 10,336.97

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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.