Home / 15,365.83-21,205.22-8,651.68

Finding the Fourth Proportional to 15,365.83, 21,205.22 and 8,651.68

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Solution

The fourth proportional to 15,365.83, 21,205.22 and 8,651.68 is: 11,939.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.83 : 21,205.22 = 8,651.68 : x
  2. Step 2: Convert to fraction form
    15,365.83/21,205.22 = 8,651.68/x
  3. Step 3: Cross multiply
    15,365.83x = 21,205.22 × 8,651.68
  4. Step 4: Simplify right side
    15,365.83x = 183,460,777.77
  5. Step 5: Solve for x
    x = 183,460,777.77/15,365.83
  6. Step 6: Final answer
    x = 11,939.53

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Similar ratio
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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.