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Finding the Fourth Proportional to 12,888.17, 19,339.70 and 6,965.08

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Solution

The fourth proportional to 12,888.17, 19,339.70 and 6,965.08 is: 10,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.17 : 19,339.70 = 6,965.08 : x
  2. Step 2: Convert to fraction form
    12,888.17/19,339.70 = 6,965.08/x
  3. Step 3: Cross multiply
    12,888.17x = 19,339.70 × 6,965.08
  4. Step 4: Simplify right side
    12,888.17x = 134,702,557.68
  5. Step 5: Solve for x
    x = 134,702,557.68/12,888.17
  6. Step 6: Final answer
    x = 10,451.64

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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.