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Finding the Fourth Proportional to 12,671.19, 17,486.32 and 6,928.67

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Solution

The fourth proportional to 12,671.19, 17,486.32 and 6,928.67 is: 9,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.19 : 17,486.32 = 6,928.67 : x
  2. Step 2: Convert to fraction form
    12,671.19/17,486.32 = 6,928.67/x
  3. Step 3: Cross multiply
    12,671.19x = 17,486.32 × 6,928.67
  4. Step 4: Simplify right side
    12,671.19x = 121,156,836.04
  5. Step 5: Solve for x
    x = 121,156,836.04/12,671.19
  6. Step 6: Final answer
    x = 9,561.60

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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.