Home / 15,411.62-21,267.83-8,696.32

Finding the Fourth Proportional to 15,411.62, 21,267.83 and 8,696.32

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Solution

The fourth proportional to 15,411.62, 21,267.83 and 8,696.32 is: 12,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.62 : 21,267.83 = 8,696.32 : x
  2. Step 2: Convert to fraction form
    15,411.62/21,267.83 = 8,696.32/x
  3. Step 3: Cross multiply
    15,411.62x = 21,267.83 × 8,696.32
  4. Step 4: Simplify right side
    15,411.62x = 184,951,823.96
  5. Step 5: Solve for x
    x = 184,951,823.96/15,411.62
  6. Step 6: Final answer
    x = 12,000.80

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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.