Home / 21,853.36-30,156.64-12,294.05

Finding the Fourth Proportional to 21,853.36, 30,156.64 and 12,294.05

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Solution

The fourth proportional to 21,853.36, 30,156.64 and 12,294.05 is: 16,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.36 : 30,156.64 = 12,294.05 : x
  2. Step 2: Convert to fraction form
    21,853.36/30,156.64 = 12,294.05/x
  3. Step 3: Cross multiply
    21,853.36x = 30,156.64 × 12,294.05
  4. Step 4: Simplify right side
    21,853.36x = 370,747,058.47
  5. Step 5: Solve for x
    x = 370,747,058.47/21,853.36
  6. Step 6: Final answer
    x = 16,965.22

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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.