Home / 15,390.22-21,226.40-11,141.90

Finding the Fourth Proportional to 15,390.22, 21,226.40 and 11,141.90

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Solution

The fourth proportional to 15,390.22, 21,226.40 and 11,141.90 is: 15,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390.22 : 21,226.40 = 11,141.90 : x
  2. Step 2: Convert to fraction form
    15,390.22/21,226.40 = 11,141.90/x
  3. Step 3: Cross multiply
    15,390.22x = 21,226.40 × 11,141.90
  4. Step 4: Simplify right side
    15,390.22x = 236,502,426.16
  5. Step 5: Solve for x
    x = 236,502,426.16/15,390.22
  6. Step 6: Final answer
    x = 15,367.06

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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.