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Finding the Fourth Proportional to 12,713.76, 19,030.68 and 8,806.32

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Solution

The fourth proportional to 12,713.76, 19,030.68 and 8,806.32 is: 13,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,713.76 : 19,030.68 = 8,806.32 : x
  2. Step 2: Convert to fraction form
    12,713.76/19,030.68 = 8,806.32/x
  3. Step 3: Cross multiply
    12,713.76x = 19,030.68 × 8,806.32
  4. Step 4: Simplify right side
    12,713.76x = 167,590,257.90
  5. Step 5: Solve for x
    x = 167,590,257.90/12,713.76
  6. Step 6: Final answer
    x = 13,181.80

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1.5x scale

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.