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Finding the Fourth Proportional to 12,928.47, 19,374.47 and 5,891.19

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Solution

The fourth proportional to 12,928.47, 19,374.47 and 5,891.19 is: 8,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.47 : 19,374.47 = 5,891.19 : x
  2. Step 2: Convert to fraction form
    12,928.47/19,374.47 = 5,891.19/x
  3. Step 3: Cross multiply
    12,928.47x = 19,374.47 × 5,891.19
  4. Step 4: Simplify right side
    12,928.47x = 114,138,683.92
  5. Step 5: Solve for x
    x = 114,138,683.92/12,928.47
  6. Step 6: Final answer
    x = 8,828.48

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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.