Home / 19,973.80-29,960.70-11,663.20

Finding the Fourth Proportional to 19,973.80, 29,960.70 and 11,663.20

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Solution

The fourth proportional to 19,973.80, 29,960.70 and 11,663.20 is: 17,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,973.80 : 29,960.70 = 11,663.20 : x
  2. Step 2: Convert to fraction form
    19,973.80/29,960.70 = 11,663.20/x
  3. Step 3: Cross multiply
    19,973.80x = 29,960.70 × 11,663.20
  4. Step 4: Simplify right side
    19,973.80x = 349,437,636.24
  5. Step 5: Solve for x
    x = 349,437,636.24/19,973.80
  6. Step 6: Final answer
    x = 17,494.80

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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.