Home / 19,820.80-29,721.60-11,046.40

Finding the Fourth Proportional to 19,820.80, 29,721.60 and 11,046.40

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Solution

The fourth proportional to 19,820.80, 29,721.60 and 11,046.40 is: 16,564.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.80 : 29,721.60 = 11,046.40 : x
  2. Step 2: Convert to fraction form
    19,820.80/29,721.60 = 11,046.40/x
  3. Step 3: Cross multiply
    19,820.80x = 29,721.60 × 11,046.40
  4. Step 4: Simplify right side
    19,820.80x = 328,316,682.24
  5. Step 5: Solve for x
    x = 328,316,682.24/19,820.80
  6. Step 6: Final answer
    x = 16,564.25

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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.