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Finding the Fourth Proportional to 28,516, 39,369.36 and 18,597.28

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Solution

The fourth proportional to 28,516, 39,369.36 and 18,597.28 is: 25,675.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516 : 39,369.36 = 18,597.28 : x
  2. Step 2: Convert to fraction form
    28,516/39,369.36 = 18,597.28/x
  3. Step 3: Cross multiply
    28,516x = 39,369.36 × 18,597.28
  4. Step 4: Simplify right side
    28,516x = 732,163,011.34
  5. Step 5: Solve for x
    x = 732,163,011.34/28,516
  6. Step 6: Final answer
    x = 25,675.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.