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Finding the Fourth Proportional to 15,167.32, 20,930.94 and 8,795.16

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Solution

The fourth proportional to 15,167.32, 20,930.94 and 8,795.16 is: 12,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.32 : 20,930.94 = 8,795.16 : x
  2. Step 2: Convert to fraction form
    15,167.32/20,930.94 = 8,795.16/x
  3. Step 3: Cross multiply
    15,167.32x = 20,930.94 × 8,795.16
  4. Step 4: Simplify right side
    15,167.32x = 184,090,966.25
  5. Step 5: Solve for x
    x = 184,090,966.25/15,167.32
  6. Step 6: Final answer
    x = 12,137.34

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1.5x scale

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.