Home / 19,701.36-27,201.15-15,155.96

Finding the Fourth Proportional to 19,701.36, 27,201.15 and 15,155.96

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Solution

The fourth proportional to 19,701.36, 27,201.15 and 15,155.96 is: 20,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.36 : 27,201.15 = 15,155.96 : x
  2. Step 2: Convert to fraction form
    19,701.36/27,201.15 = 15,155.96/x
  3. Step 3: Cross multiply
    19,701.36x = 27,201.15 × 15,155.96
  4. Step 4: Simplify right side
    19,701.36x = 412,259,405.35
  5. Step 5: Solve for x
    x = 412,259,405.35/19,701.36
  6. Step 6: Final answer
    x = 20,925.43

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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.