Home / 19,858.40-27,403.38-10,905.68

Finding the Fourth Proportional to 19,858.40, 27,403.38 and 10,905.68

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Solution

The fourth proportional to 19,858.40, 27,403.38 and 10,905.68 is: 15,049.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.40 : 27,403.38 = 10,905.68 : x
  2. Step 2: Convert to fraction form
    19,858.40/27,403.38 = 10,905.68/x
  3. Step 3: Cross multiply
    19,858.40x = 27,403.38 × 10,905.68
  4. Step 4: Simplify right side
    19,858.40x = 298,852,493.20
  5. Step 5: Solve for x
    x = 298,852,493.20/19,858.40
  6. Step 6: Final answer
    x = 15,049.17

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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.