Home / 13,328.18-19,986.46-7,086.70

Finding the Fourth Proportional to 13,328.18, 19,986.46 and 7,086.70

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Solution

The fourth proportional to 13,328.18, 19,986.46 and 7,086.70 is: 10,626.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.18 : 19,986.46 = 7,086.70 : x
  2. Step 2: Convert to fraction form
    13,328.18/19,986.46 = 7,086.70/x
  3. Step 3: Cross multiply
    13,328.18x = 19,986.46 × 7,086.70
  4. Step 4: Simplify right side
    13,328.18x = 141,638,046.08
  5. Step 5: Solve for x
    x = 141,638,046.08/13,328.18
  6. Step 6: Final answer
    x = 10,626.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.