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Finding the Fourth Proportional to 39,897.90, 59,855.72 and 17,412.20

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Solution

The fourth proportional to 39,897.90, 59,855.72 and 17,412.20 is: 26,122.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.90 : 59,855.72 = 17,412.20 : x
  2. Step 2: Convert to fraction form
    39,897.90/59,855.72 = 17,412.20/x
  3. Step 3: Cross multiply
    39,897.90x = 59,855.72 × 17,412.20
  4. Step 4: Simplify right side
    39,897.90x = 1,042,219,381.44
  5. Step 5: Solve for x
    x = 1,042,219,381.44/39,897.90
  6. Step 6: Final answer
    x = 26,122.16

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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.