Home / 28,637.36-39,520-17,305.28

Finding the Fourth Proportional to 28,637.36, 39,520 and 17,305.28

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Solution

The fourth proportional to 28,637.36, 39,520 and 17,305.28 is: 23,881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.36 : 39,520 = 17,305.28 : x
  2. Step 2: Convert to fraction form
    28,637.36/39,520 = 17,305.28/x
  3. Step 3: Cross multiply
    28,637.36x = 39,520 × 17,305.28
  4. Step 4: Simplify right side
    28,637.36x = 683,904,665.60
  5. Step 5: Solve for x
    x = 683,904,665.60/28,637.36
  6. Step 6: Final answer
    x = 23,881.55

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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.