Home / 19,403.20-26,776.32-10,905.55

Finding the Fourth Proportional to 19,403.20, 26,776.32 and 10,905.55

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Solution

The fourth proportional to 19,403.20, 26,776.32 and 10,905.55 is: 15,049.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,403.20 : 26,776.32 = 10,905.55 : x
  2. Step 2: Convert to fraction form
    19,403.20/26,776.32 = 10,905.55/x
  3. Step 3: Cross multiply
    19,403.20x = 26,776.32 × 10,905.55
  4. Step 4: Simplify right side
    19,403.20x = 292,010,496.58
  5. Step 5: Solve for x
    x = 292,010,496.58/19,403.20
  6. Step 6: Final answer
    x = 15,049.61

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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.