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Finding the Fourth Proportional to 15,903.60, 23,836.20 and 8,108.40

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Solution

The fourth proportional to 15,903.60, 23,836.20 and 8,108.40 is: 12,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.60 : 23,836.20 = 8,108.40 : x
  2. Step 2: Convert to fraction form
    15,903.60/23,836.20 = 8,108.40/x
  3. Step 3: Cross multiply
    15,903.60x = 23,836.20 × 8,108.40
  4. Step 4: Simplify right side
    15,903.60x = 193,273,444.08
  5. Step 5: Solve for x
    x = 193,273,444.08/15,903.60
  6. Step 6: Final answer
    x = 12,152.81

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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.