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Finding the Fourth Proportional to 15,772.77, 21,766.32 and 8,699.04

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Solution

The fourth proportional to 15,772.77, 21,766.32 and 8,699.04 is: 12,004.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.77 : 21,766.32 = 8,699.04 : x
  2. Step 2: Convert to fraction form
    15,772.77/21,766.32 = 8,699.04/x
  3. Step 3: Cross multiply
    15,772.77x = 21,766.32 × 8,699.04
  4. Step 4: Simplify right side
    15,772.77x = 189,346,088.33
  5. Step 5: Solve for x
    x = 189,346,088.33/15,772.77
  6. Step 6: Final answer
    x = 12,004.62

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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.