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Finding the Fourth Proportional to 15,916.21, 23,881.07 and 8,518.75

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Solution

The fourth proportional to 15,916.21, 23,881.07 and 8,518.75 is: 12,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.21 : 23,881.07 = 8,518.75 : x
  2. Step 2: Convert to fraction form
    15,916.21/23,881.07 = 8,518.75/x
  3. Step 3: Cross multiply
    15,916.21x = 23,881.07 × 8,518.75
  4. Step 4: Simplify right side
    15,916.21x = 203,436,865.06
  5. Step 5: Solve for x
    x = 203,436,865.06/15,916.21
  6. Step 6: Final answer
    x = 12,781.74

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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.