Home / 22,106.88-30,521.26-15,390.06

Finding the Fourth Proportional to 22,106.88, 30,521.26 and 15,390.06

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Solution

The fourth proportional to 22,106.88, 30,521.26 and 15,390.06 is: 21,247.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,106.88 : 30,521.26 = 15,390.06 : x
  2. Step 2: Convert to fraction form
    22,106.88/30,521.26 = 15,390.06/x
  3. Step 3: Cross multiply
    22,106.88x = 30,521.26 × 15,390.06
  4. Step 4: Simplify right side
    22,106.88x = 469,724,022.68
  5. Step 5: Solve for x
    x = 469,724,022.68/22,106.88
  6. Step 6: Final answer
    x = 21,247.87

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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.