Home / 13,986.20-19,301.36-7,698.57

Finding the Fourth Proportional to 13,986.20, 19,301.36 and 7,698.57

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Solution

The fourth proportional to 13,986.20, 19,301.36 and 7,698.57 is: 10,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.20 : 19,301.36 = 7,698.57 : x
  2. Step 2: Convert to fraction form
    13,986.20/19,301.36 = 7,698.57/x
  3. Step 3: Cross multiply
    13,986.20x = 19,301.36 × 7,698.57
  4. Step 4: Simplify right side
    13,986.20x = 148,592,832.56
  5. Step 5: Solve for x
    x = 148,592,832.56/13,986.20
  6. Step 6: Final answer
    x = 10,624.25

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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.