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Finding the Fourth Proportional to 15,774.77, 21,769.08 and 8,701.04

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Solution

The fourth proportional to 15,774.77, 21,769.08 and 8,701.04 is: 12,007.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.77 : 21,769.08 = 8,701.04 : x
  2. Step 2: Convert to fraction form
    15,774.77/21,769.08 = 8,701.04/x
  3. Step 3: Cross multiply
    15,774.77x = 21,769.08 × 8,701.04
  4. Step 4: Simplify right side
    15,774.77x = 189,413,635.84
  5. Step 5: Solve for x
    x = 189,413,635.84/15,774.77
  6. Step 6: Final answer
    x = 12,007.38

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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.