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Finding the Fourth Proportional to 23,187, 34,780.50 and 10,875

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Solution

The fourth proportional to 23,187, 34,780.50 and 10,875 is: 16,312.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,187 : 34,780.50 = 10,875 : x
  2. Step 2: Convert to fraction form
    23,187/34,780.50 = 10,875/x
  3. Step 3: Cross multiply
    23,187x = 34,780.50 × 10,875
  4. Step 4: Simplify right side
    23,187x = 378,237,937.50
  5. Step 5: Solve for x
    x = 378,237,937.50/23,187
  6. Step 6: Final answer
    x = 16,312.50

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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.