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Finding the Fourth Proportional to 28,168, 42,252.60 and 10,646.08

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Solution

The fourth proportional to 28,168, 42,252.60 and 10,646.08 is: 15,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168 : 42,252.60 = 10,646.08 : x
  2. Step 2: Convert to fraction form
    28,168/42,252.60 = 10,646.08/x
  3. Step 3: Cross multiply
    28,168x = 42,252.60 × 10,646.08
  4. Step 4: Simplify right side
    28,168x = 449,824,559.81
  5. Step 5: Solve for x
    x = 449,824,559.81/28,168
  6. Step 6: Final answer
    x = 15,969.35

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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.