Home / 13,881.64-19,155.20-8,216.60

Finding the Fourth Proportional to 13,881.64, 19,155.20 and 8,216.60

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Solution

The fourth proportional to 13,881.64, 19,155.20 and 8,216.60 is: 11,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.64 : 19,155.20 = 8,216.60 : x
  2. Step 2: Convert to fraction form
    13,881.64/19,155.20 = 8,216.60/x
  3. Step 3: Cross multiply
    13,881.64x = 19,155.20 × 8,216.60
  4. Step 4: Simplify right side
    13,881.64x = 157,390,616.32
  5. Step 5: Solve for x
    x = 157,390,616.32/13,881.64
  6. Step 6: Final answer
    x = 11,338.04

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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.