Home / 13,931.70-20,916.10-8,092.50

Finding the Fourth Proportional to 13,931.70, 20,916.10 and 8,092.50

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Solution

The fourth proportional to 13,931.70, 20,916.10 and 8,092.50 is: 12,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.70 : 20,916.10 = 8,092.50 : x
  2. Step 2: Convert to fraction form
    13,931.70/20,916.10 = 8,092.50/x
  3. Step 3: Cross multiply
    13,931.70x = 20,916.10 × 8,092.50
  4. Step 4: Simplify right side
    13,931.70x = 169,263,539.25
  5. Step 5: Solve for x
    x = 169,263,539.25/13,931.70
  6. Step 6: Final answer
    x = 12,149.53

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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.