Home / 19,478.25-29,192.72-12,455.55

Finding the Fourth Proportional to 19,478.25, 29,192.72 and 12,455.55

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Solution

The fourth proportional to 19,478.25, 29,192.72 and 12,455.55 is: 18,667.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.25 : 29,192.72 = 12,455.55 : x
  2. Step 2: Convert to fraction form
    19,478.25/29,192.72 = 12,455.55/x
  3. Step 3: Cross multiply
    19,478.25x = 29,192.72 × 12,455.55
  4. Step 4: Simplify right side
    19,478.25x = 363,611,321.32
  5. Step 5: Solve for x
    x = 363,611,321.32/19,478.25
  6. Step 6: Final answer
    x = 18,667.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.