Home / 19,905.11-27,465.92-11,405.60

Finding the Fourth Proportional to 19,905.11, 27,465.92 and 11,405.60

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Solution

The fourth proportional to 19,905.11, 27,465.92 and 11,405.60 is: 15,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.11 : 27,465.92 = 11,405.60 : x
  2. Step 2: Convert to fraction form
    19,905.11/27,465.92 = 11,405.60/x
  3. Step 3: Cross multiply
    19,905.11x = 27,465.92 × 11,405.60
  4. Step 4: Simplify right side
    19,905.11x = 313,265,342.83
  5. Step 5: Solve for x
    x = 313,265,342.83/19,905.11
  6. Step 6: Final answer
    x = 15,737.93

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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.