Home / 13,046.40-18,004.80-7,381.66

Finding the Fourth Proportional to 13,046.40, 18,004.80 and 7,381.66

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Solution

The fourth proportional to 13,046.40, 18,004.80 and 7,381.66 is: 10,187.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,046.40 : 18,004.80 = 7,381.66 : x
  2. Step 2: Convert to fraction form
    13,046.40/18,004.80 = 7,381.66/x
  3. Step 3: Cross multiply
    13,046.40x = 18,004.80 × 7,381.66
  4. Step 4: Simplify right side
    13,046.40x = 132,905,311.97
  5. Step 5: Solve for x
    x = 132,905,311.97/13,046.40
  6. Step 6: Final answer
    x = 10,187.13

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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.