Home / 15,910.36-21,958.05-9,105.01

Finding the Fourth Proportional to 15,910.36, 21,958.05 and 9,105.01

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Solution

The fourth proportional to 15,910.36, 21,958.05 and 9,105.01 is: 12,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.36 : 21,958.05 = 9,105.01 : x
  2. Step 2: Convert to fraction form
    15,910.36/21,958.05 = 9,105.01/x
  3. Step 3: Cross multiply
    15,910.36x = 21,958.05 × 9,105.01
  4. Step 4: Simplify right side
    15,910.36x = 199,928,264.83
  5. Step 5: Solve for x
    x = 199,928,264.83/15,910.36
  6. Step 6: Final answer
    x = 12,565.92

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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.