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Finding the Fourth Proportional to 13,246.70, 19,870.05 and 11,108.30

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Solution

The fourth proportional to 13,246.70, 19,870.05 and 11,108.30 is: 16,662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.70 : 19,870.05 = 11,108.30 : x
  2. Step 2: Convert to fraction form
    13,246.70/19,870.05 = 11,108.30/x
  3. Step 3: Cross multiply
    13,246.70x = 19,870.05 × 11,108.30
  4. Step 4: Simplify right side
    13,246.70x = 220,722,476.42
  5. Step 5: Solve for x
    x = 220,722,476.42/13,246.70
  6. Step 6: Final answer
    x = 16,662.45

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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.