Home / 21,611.52-29,825.28-12,176.64

Finding the Fourth Proportional to 21,611.52, 29,825.28 and 12,176.64

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Solution

The fourth proportional to 21,611.52, 29,825.28 and 12,176.64 is: 16,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.52 : 29,825.28 = 12,176.64 : x
  2. Step 2: Convert to fraction form
    21,611.52/29,825.28 = 12,176.64/x
  3. Step 3: Cross multiply
    21,611.52x = 29,825.28 × 12,176.64
  4. Step 4: Simplify right side
    21,611.52x = 363,171,697.46
  5. Step 5: Solve for x
    x = 363,171,697.46/21,611.52
  6. Step 6: Final answer
    x = 16,804.54

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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.