Home / 13,118.95-18,103.68-7,150.50

Finding the Fourth Proportional to 13,118.95, 18,103.68 and 7,150.50

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Solution

The fourth proportional to 13,118.95, 18,103.68 and 7,150.50 is: 9,867.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.95 : 18,103.68 = 7,150.50 : x
  2. Step 2: Convert to fraction form
    13,118.95/18,103.68 = 7,150.50/x
  3. Step 3: Cross multiply
    13,118.95x = 18,103.68 × 7,150.50
  4. Step 4: Simplify right side
    13,118.95x = 129,450,363.84
  5. Step 5: Solve for x
    x = 129,450,363.84/13,118.95
  6. Step 6: Final answer
    x = 9,867.43

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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.