Home / 13,154.13-18,153.11-8,118.23

Finding the Fourth Proportional to 13,154.13, 18,153.11 and 8,118.23

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Solution

The fourth proportional to 13,154.13, 18,153.11 and 8,118.23 is: 11,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.13 : 18,153.11 = 8,118.23 : x
  2. Step 2: Convert to fraction form
    13,154.13/18,153.11 = 8,118.23/x
  3. Step 3: Cross multiply
    13,154.13x = 18,153.11 × 8,118.23
  4. Step 4: Simplify right side
    13,154.13x = 147,371,051.73
  5. Step 5: Solve for x
    x = 147,371,051.73/13,154.13
  6. Step 6: Final answer
    x = 11,203.41

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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.