Home / 15,881.45-21,911.38-9,166.19

Finding the Fourth Proportional to 15,881.45, 21,911.38 and 9,166.19

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Solution

The fourth proportional to 15,881.45, 21,911.38 and 9,166.19 is: 12,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,881.45 : 21,911.38 = 9,166.19 : x
  2. Step 2: Convert to fraction form
    15,881.45/21,911.38 = 9,166.19/x
  3. Step 3: Cross multiply
    15,881.45x = 21,911.38 × 9,166.19
  4. Step 4: Simplify right side
    15,881.45x = 200,843,739.77
  5. Step 5: Solve for x
    x = 200,843,739.77/15,881.45
  6. Step 6: Final answer
    x = 12,646.44

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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.