Home / 13,155.12-18,153.57-7,847.19

Finding the Fourth Proportional to 13,155.12, 18,153.57 and 7,847.19

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Solution

The fourth proportional to 13,155.12, 18,153.57 and 7,847.19 is: 10,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.12 : 18,153.57 = 7,847.19 : x
  2. Step 2: Convert to fraction form
    13,155.12/18,153.57 = 7,847.19/x
  3. Step 3: Cross multiply
    13,155.12x = 18,153.57 × 7,847.19
  4. Step 4: Simplify right side
    13,155.12x = 142,454,512.97
  5. Step 5: Solve for x
    x = 142,454,512.97/13,155.12
  6. Step 6: Final answer
    x = 10,828.83

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Half scale
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Double scale
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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.