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Finding the Fourth Proportional to 28,893.78, 43,390.08 and 17,865.63

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Solution

The fourth proportional to 28,893.78, 43,390.08 and 17,865.63 is: 26,829.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.78 : 43,390.08 = 17,865.63 : x
  2. Step 2: Convert to fraction form
    28,893.78/43,390.08 = 17,865.63/x
  3. Step 3: Cross multiply
    28,893.78x = 43,390.08 × 17,865.63
  4. Step 4: Simplify right side
    28,893.78x = 775,191,114.95
  5. Step 5: Solve for x
    x = 775,191,114.95/28,893.78
  6. Step 6: Final answer
    x = 26,829.00

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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.