Home / 15,400.73-21,253.19-8,686.44

Finding the Fourth Proportional to 15,400.73, 21,253.19 and 8,686.44

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Solution

The fourth proportional to 15,400.73, 21,253.19 and 8,686.44 is: 11,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.73 : 21,253.19 = 8,686.44 : x
  2. Step 2: Convert to fraction form
    15,400.73/21,253.19 = 8,686.44/x
  3. Step 3: Cross multiply
    15,400.73x = 21,253.19 × 8,686.44
  4. Step 4: Simplify right side
    15,400.73x = 184,614,516.31
  5. Step 5: Solve for x
    x = 184,614,516.31/15,400.73
  6. Step 6: Final answer
    x = 11,987.39

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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.