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Finding the Fourth Proportional to 15,135.52, 20,887.12 and 8,846.64

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Solution

The fourth proportional to 15,135.52, 20,887.12 and 8,846.64 is: 12,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.52 : 20,887.12 = 8,846.64 : x
  2. Step 2: Convert to fraction form
    15,135.52/20,887.12 = 8,846.64/x
  3. Step 3: Cross multiply
    15,135.52x = 20,887.12 × 8,846.64
  4. Step 4: Simplify right side
    15,135.52x = 184,780,831.28
  5. Step 5: Solve for x
    x = 184,780,831.28/15,135.52
  6. Step 6: Final answer
    x = 12,208.42

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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.