Home / 13,891.48-19,150.32-9,905.68

Finding the Fourth Proportional to 13,891.48, 19,150.32 and 9,905.68

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Solution

The fourth proportional to 13,891.48, 19,150.32 and 9,905.68 is: 13,655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.48 : 19,150.32 = 9,905.68 : x
  2. Step 2: Convert to fraction form
    13,891.48/19,150.32 = 9,905.68/x
  3. Step 3: Cross multiply
    13,891.48x = 19,150.32 × 9,905.68
  4. Step 4: Simplify right side
    13,891.48x = 189,696,892.29
  5. Step 5: Solve for x
    x = 189,696,892.29/13,891.48
  6. Step 6: Final answer
    x = 13,655.63

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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.