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Finding the Fourth Proportional to 15,099.17, 20,835.81 and 8,384.45

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Solution

The fourth proportional to 15,099.17, 20,835.81 and 8,384.45 is: 11,569.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.17 : 20,835.81 = 8,384.45 : x
  2. Step 2: Convert to fraction form
    15,099.17/20,835.81 = 8,384.45/x
  3. Step 3: Cross multiply
    15,099.17x = 20,835.81 × 8,384.45
  4. Step 4: Simplify right side
    15,099.17x = 174,696,702.98
  5. Step 5: Solve for x
    x = 174,696,702.98/15,099.17
  6. Step 6: Final answer
    x = 11,569.96

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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.