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Finding the Fourth Proportional to 28,365, 42,566.94 and 9,897

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Solution

The fourth proportional to 28,365, 42,566.94 and 9,897 is: 14,852.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365 : 42,566.94 = 9,897 : x
  2. Step 2: Convert to fraction form
    28,365/42,566.94 = 9,897/x
  3. Step 3: Cross multiply
    28,365x = 42,566.94 × 9,897
  4. Step 4: Simplify right side
    28,365x = 421,285,005.18
  5. Step 5: Solve for x
    x = 421,285,005.18/28,365
  6. Step 6: Final answer
    x = 14,852.28

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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.