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Finding the Fourth Proportional to 14,777.32, 20,392.10 and 8,153.32

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Solution

The fourth proportional to 14,777.32, 20,392.10 and 8,153.32 is: 11,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.32 : 20,392.10 = 8,153.32 : x
  2. Step 2: Convert to fraction form
    14,777.32/20,392.10 = 8,153.32/x
  3. Step 3: Cross multiply
    14,777.32x = 20,392.10 × 8,153.32
  4. Step 4: Simplify right side
    14,777.32x = 166,263,316.77
  5. Step 5: Solve for x
    x = 166,263,316.77/14,777.32
  6. Step 6: Final answer
    x = 11,251.25

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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.