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Finding the Fourth Proportional to 21,903.78, 32,857.42 and 8,748.92

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Solution

The fourth proportional to 21,903.78, 32,857.42 and 8,748.92 is: 13,124.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.78 : 32,857.42 = 8,748.92 : x
  2. Step 2: Convert to fraction form
    21,903.78/32,857.42 = 8,748.92/x
  3. Step 3: Cross multiply
    21,903.78x = 32,857.42 × 8,748.92
  4. Step 4: Simplify right side
    21,903.78x = 287,466,938.99
  5. Step 5: Solve for x
    x = 287,466,938.99/21,903.78
  6. Step 6: Final answer
    x = 13,124.08

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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.