Home / 19,643.78-27,111.93-12,569.96

Finding the Fourth Proportional to 19,643.78, 27,111.93 and 12,569.96

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Solution

The fourth proportional to 19,643.78, 27,111.93 and 12,569.96 is: 17,348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.78 : 27,111.93 = 12,569.96 : x
  2. Step 2: Convert to fraction form
    19,643.78/27,111.93 = 12,569.96/x
  3. Step 3: Cross multiply
    19,643.78x = 27,111.93 × 12,569.96
  4. Step 4: Simplify right side
    19,643.78x = 340,795,875.62
  5. Step 5: Solve for x
    x = 340,795,875.62/19,643.78
  6. Step 6: Final answer
    x = 17,348.79

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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.