Home / 19,479.75-26,884.12-11,420.18

Finding the Fourth Proportional to 19,479.75, 26,884.12 and 11,420.18

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Solution

The fourth proportional to 19,479.75, 26,884.12 and 11,420.18 is: 15,761.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.75 : 26,884.12 = 11,420.18 : x
  2. Step 2: Convert to fraction form
    19,479.75/26,884.12 = 11,420.18/x
  3. Step 3: Cross multiply
    19,479.75x = 26,884.12 × 11,420.18
  4. Step 4: Simplify right side
    19,479.75x = 307,021,489.54
  5. Step 5: Solve for x
    x = 307,021,489.54/19,479.75
  6. Step 6: Final answer
    x = 15,761.06

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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.