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Finding the Fourth Proportional to 25,099.78, 37,575.70 and 21,985.87

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Solution

The fourth proportional to 25,099.78, 37,575.70 and 21,985.87 is: 32,914.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,099.78 : 37,575.70 = 21,985.87 : x
  2. Step 2: Convert to fraction form
    25,099.78/37,575.70 = 21,985.87/x
  3. Step 3: Cross multiply
    25,099.78x = 37,575.70 × 21,985.87
  4. Step 4: Simplify right side
    25,099.78x = 826,134,345.43
  5. Step 5: Solve for x
    x = 826,134,345.43/25,099.78
  6. Step 6: Final answer
    x = 32,914.01

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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.