Home / 13,381.25-18,446.45-10,188.98

Finding the Fourth Proportional to 13,381.25, 18,446.45 and 10,188.98

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Solution

The fourth proportional to 13,381.25, 18,446.45 and 10,188.98 is: 14,045.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.25 : 18,446.45 = 10,188.98 : x
  2. Step 2: Convert to fraction form
    13,381.25/18,446.45 = 10,188.98/x
  3. Step 3: Cross multiply
    13,381.25x = 18,446.45 × 10,188.98
  4. Step 4: Simplify right side
    13,381.25x = 187,950,366.94
  5. Step 5: Solve for x
    x = 187,950,366.94/13,381.25
  6. Step 6: Final answer
    x = 14,045.81

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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.