Home / 13,891.64-19,150.48-9,905.80

Finding the Fourth Proportional to 13,891.64, 19,150.48 and 9,905.80

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Solution

The fourth proportional to 13,891.64, 19,150.48 and 9,905.80 is: 13,655.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.64 : 19,150.48 = 9,905.80 : x
  2. Step 2: Convert to fraction form
    13,891.64/19,150.48 = 9,905.80/x
  3. Step 3: Cross multiply
    13,891.64x = 19,150.48 × 9,905.80
  4. Step 4: Simplify right side
    13,891.64x = 189,700,824.78
  5. Step 5: Solve for x
    x = 189,700,824.78/13,891.64
  6. Step 6: Final answer
    x = 13,655.75

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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.