Home / 19,985.80-29,946.30-17,199.40

Finding the Fourth Proportional to 19,985.80, 29,946.30 and 17,199.40

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Solution

The fourth proportional to 19,985.80, 29,946.30 and 17,199.40 is: 25,771.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.80 : 29,946.30 = 17,199.40 : x
  2. Step 2: Convert to fraction form
    19,985.80/29,946.30 = 17,199.40/x
  3. Step 3: Cross multiply
    19,985.80x = 29,946.30 × 17,199.40
  4. Step 4: Simplify right side
    19,985.80x = 515,058,392.22
  5. Step 5: Solve for x
    x = 515,058,392.22/19,985.80
  6. Step 6: Final answer
    x = 25,771.22

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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.