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Finding the Fourth Proportional to 15,135.68, 20,887.08 and 8,846.84

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Solution

The fourth proportional to 15,135.68, 20,887.08 and 8,846.84 is: 12,208.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.68 : 20,887.08 = 8,846.84 : x
  2. Step 2: Convert to fraction form
    15,135.68/20,887.08 = 8,846.84/x
  3. Step 3: Cross multiply
    15,135.68x = 20,887.08 × 8,846.84
  4. Step 4: Simplify right side
    15,135.68x = 184,784,654.83
  5. Step 5: Solve for x
    x = 184,784,654.83/15,135.68
  6. Step 6: Final answer
    x = 12,208.55

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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.