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Finding the Fourth Proportional to 12,474.18, 18,698.36 and 4,974.89

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Solution

The fourth proportional to 12,474.18, 18,698.36 and 4,974.89 is: 7,457.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.18 : 18,698.36 = 4,974.89 : x
  2. Step 2: Convert to fraction form
    12,474.18/18,698.36 = 4,974.89/x
  3. Step 3: Cross multiply
    12,474.18x = 18,698.36 × 4,974.89
  4. Step 4: Simplify right side
    12,474.18x = 93,022,165.81
  5. Step 5: Solve for x
    x = 93,022,165.81/12,474.18
  6. Step 6: Final answer
    x = 7,457.18

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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.