Home / 13,891.29-19,150.02-9,905.49

Finding the Fourth Proportional to 13,891.29, 19,150.02 and 9,905.49

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Solution

The fourth proportional to 13,891.29, 19,150.02 and 9,905.49 is: 13,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.29 : 19,150.02 = 9,905.49 : x
  2. Step 2: Convert to fraction form
    13,891.29/19,150.02 = 9,905.49/x
  3. Step 3: Cross multiply
    13,891.29x = 19,150.02 × 9,905.49
  4. Step 4: Simplify right side
    13,891.29x = 189,690,331.61
  5. Step 5: Solve for x
    x = 189,690,331.61/13,891.29
  6. Step 6: Final answer
    x = 13,655.34

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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.