Home / 15,302.96-21,120.46-8,591.30

Finding the Fourth Proportional to 15,302.96, 21,120.46 and 8,591.30

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Solution

The fourth proportional to 15,302.96, 21,120.46 and 8,591.30 is: 11,857.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.96 : 21,120.46 = 8,591.30 : x
  2. Step 2: Convert to fraction form
    15,302.96/21,120.46 = 8,591.30/x
  3. Step 3: Cross multiply
    15,302.96x = 21,120.46 × 8,591.30
  4. Step 4: Simplify right side
    15,302.96x = 181,452,208.00
  5. Step 5: Solve for x
    x = 181,452,208.00/15,302.96
  6. Step 6: Final answer
    x = 11,857.33

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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.