Home / 13,330.70-19,986.45-7,489.10

Finding the Fourth Proportional to 13,330.70, 19,986.45 and 7,489.10

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Solution

The fourth proportional to 13,330.70, 19,986.45 and 7,489.10 is: 11,228.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.70 : 19,986.45 = 7,489.10 : x
  2. Step 2: Convert to fraction form
    13,330.70/19,986.45 = 7,489.10/x
  3. Step 3: Cross multiply
    13,330.70x = 19,986.45 × 7,489.10
  4. Step 4: Simplify right side
    13,330.70x = 149,680,522.70
  5. Step 5: Solve for x
    x = 149,680,522.70/13,330.70
  6. Step 6: Final answer
    x = 11,228.26

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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.