Home / 15,161.34-20,922.66-8,789.16

Finding the Fourth Proportional to 15,161.34, 20,922.66 and 8,789.16

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Solution

The fourth proportional to 15,161.34, 20,922.66 and 8,789.16 is: 12,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.34 : 20,922.66 = 8,789.16 : x
  2. Step 2: Convert to fraction form
    15,161.34/20,922.66 = 8,789.16/x
  3. Step 3: Cross multiply
    15,161.34x = 20,922.66 × 8,789.16
  4. Step 4: Simplify right side
    15,161.34x = 183,892,606.37
  5. Step 5: Solve for x
    x = 183,892,606.37/15,161.34
  6. Step 6: Final answer
    x = 12,129.05

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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.