Home / 19,643.87-27,109.98-11,147.45

Finding the Fourth Proportional to 19,643.87, 27,109.98 and 11,147.45

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Solution

The fourth proportional to 19,643.87, 27,109.98 and 11,147.45 is: 15,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.87 : 27,109.98 = 11,147.45 : x
  2. Step 2: Convert to fraction form
    19,643.87/27,109.98 = 11,147.45/x
  3. Step 3: Cross multiply
    19,643.87x = 27,109.98 × 11,147.45
  4. Step 4: Simplify right side
    19,643.87x = 302,207,146.55
  5. Step 5: Solve for x
    x = 302,207,146.55/19,643.87
  6. Step 6: Final answer
    x = 15,384.30

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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.