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Finding the Fourth Proportional to 13,508.22, 18,619.03 and 9,030.34

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Solution

The fourth proportional to 13,508.22, 18,619.03 and 9,030.34 is: 12,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.22 : 18,619.03 = 9,030.34 : x
  2. Step 2: Convert to fraction form
    13,508.22/18,619.03 = 9,030.34/x
  3. Step 3: Cross multiply
    13,508.22x = 18,619.03 × 9,030.34
  4. Step 4: Simplify right side
    13,508.22x = 168,136,136.11
  5. Step 5: Solve for x
    x = 168,136,136.11/13,508.22
  6. Step 6: Final answer
    x = 12,446.95

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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.