Home / 13,145.03-19,724.84-9,642.18

Finding the Fourth Proportional to 13,145.03, 19,724.84 and 9,642.18

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Solution

The fourth proportional to 13,145.03, 19,724.84 and 9,642.18 is: 14,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.03 : 19,724.84 = 9,642.18 : x
  2. Step 2: Convert to fraction form
    13,145.03/19,724.84 = 9,642.18/x
  3. Step 3: Cross multiply
    13,145.03x = 19,724.84 × 9,642.18
  4. Step 4: Simplify right side
    13,145.03x = 190,190,457.75
  5. Step 5: Solve for x
    x = 190,190,457.75/13,145.03
  6. Step 6: Final answer
    x = 14,468.62

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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.