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Finding the Fourth Proportional to 39,897.99, 59,840.48 and 18,837.99

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Solution

The fourth proportional to 39,897.99, 59,840.48 and 18,837.99 is: 28,253.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.99 : 59,840.48 = 18,837.99 : x
  2. Step 2: Convert to fraction form
    39,897.99/59,840.48 = 18,837.99/x
  3. Step 3: Cross multiply
    39,897.99x = 59,840.48 × 18,837.99
  4. Step 4: Simplify right side
    39,897.99x = 1,127,274,269.65
  5. Step 5: Solve for x
    x = 1,127,274,269.65/39,897.99
  6. Step 6: Final answer
    x = 28,253.91

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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.