Home / 28,611.86-39,483.65-15,865.09

Finding the Fourth Proportional to 28,611.86, 39,483.65 and 15,865.09

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Solution

The fourth proportional to 28,611.86, 39,483.65 and 15,865.09 is: 21,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.86 : 39,483.65 = 15,865.09 : x
  2. Step 2: Convert to fraction form
    28,611.86/39,483.65 = 15,865.09/x
  3. Step 3: Cross multiply
    28,611.86x = 39,483.65 × 15,865.09
  4. Step 4: Simplify right side
    28,611.86x = 626,411,601.73
  5. Step 5: Solve for x
    x = 626,411,601.73/28,611.86
  6. Step 6: Final answer
    x = 21,893.43

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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.