Home / 15,685.52-21,646.26-8,611.95

Finding the Fourth Proportional to 15,685.52, 21,646.26 and 8,611.95

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Solution

The fourth proportional to 15,685.52, 21,646.26 and 8,611.95 is: 11,884.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685.52 : 21,646.26 = 8,611.95 : x
  2. Step 2: Convert to fraction form
    15,685.52/21,646.26 = 8,611.95/x
  3. Step 3: Cross multiply
    15,685.52x = 21,646.26 × 8,611.95
  4. Step 4: Simplify right side
    15,685.52x = 186,416,431.56
  5. Step 5: Solve for x
    x = 186,416,431.56/15,685.52
  6. Step 6: Final answer
    x = 11,884.62

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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.