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Finding the Fourth Proportional to 13,216, 18,236.41 and 7,246.10

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Solution

The fourth proportional to 13,216, 18,236.41 and 7,246.10 is: 9,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216 : 18,236.41 = 7,246.10 : x
  2. Step 2: Convert to fraction form
    13,216/18,236.41 = 7,246.10/x
  3. Step 3: Cross multiply
    13,216x = 18,236.41 × 7,246.10
  4. Step 4: Simplify right side
    13,216x = 132,142,814.27
  5. Step 5: Solve for x
    x = 132,142,814.27/13,216
  6. Step 6: Final answer
    x = 9,998.70

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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.