Home / 15,881.41-21,917.34-9,168.26

Finding the Fourth Proportional to 15,881.41, 21,917.34 and 9,168.26

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Solution

The fourth proportional to 15,881.41, 21,917.34 and 9,168.26 is: 12,652.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,881.41 : 21,917.34 = 9,168.26 : x
  2. Step 2: Convert to fraction form
    15,881.41/21,917.34 = 9,168.26/x
  3. Step 3: Cross multiply
    15,881.41x = 21,917.34 × 9,168.26
  4. Step 4: Simplify right side
    15,881.41x = 200,943,825.79
  5. Step 5: Solve for x
    x = 200,943,825.79/15,881.41
  6. Step 6: Final answer
    x = 12,652.77

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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.