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Finding the Fourth Proportional to 12,475.56, 18,707.04 and 4,678.88

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Solution

The fourth proportional to 12,475.56, 18,707.04 and 4,678.88 is: 7,015.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.56 : 18,707.04 = 4,678.88 : x
  2. Step 2: Convert to fraction form
    12,475.56/18,707.04 = 4,678.88/x
  3. Step 3: Cross multiply
    12,475.56x = 18,707.04 × 4,678.88
  4. Step 4: Simplify right side
    12,475.56x = 87,527,995.32
  5. Step 5: Solve for x
    x = 87,527,995.32/12,475.56
  6. Step 6: Final answer
    x = 7,015.96

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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.