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Finding the Fourth Proportional to 19,141.76, 28,718.48 and 9,788.35

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Solution

The fourth proportional to 19,141.76, 28,718.48 and 9,788.35 is: 14,685.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,141.76 : 28,718.48 = 9,788.35 : x
  2. Step 2: Convert to fraction form
    19,141.76/28,718.48 = 9,788.35/x
  3. Step 3: Cross multiply
    19,141.76x = 28,718.48 × 9,788.35
  4. Step 4: Simplify right side
    19,141.76x = 281,106,533.71
  5. Step 5: Solve for x
    x = 281,106,533.71/19,141.76
  6. Step 6: Final answer
    x = 14,685.51

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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.