Home / 13,529.70-18,679.14-9,287.73

Finding the Fourth Proportional to 13,529.70, 18,679.14 and 9,287.73

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Solution

The fourth proportional to 13,529.70, 18,679.14 and 9,287.73 is: 12,822.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.70 : 18,679.14 = 9,287.73 : x
  2. Step 2: Convert to fraction form
    13,529.70/18,679.14 = 9,287.73/x
  3. Step 3: Cross multiply
    13,529.70x = 18,679.14 × 9,287.73
  4. Step 4: Simplify right side
    13,529.70x = 173,486,808.95
  5. Step 5: Solve for x
    x = 173,486,808.95/13,529.70
  6. Step 6: Final answer
    x = 12,822.66

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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.