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Finding the Fourth Proportional to 19,271.86, 28,867.05 and 9,883.28

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Solution

The fourth proportional to 19,271.86, 28,867.05 and 9,883.28 is: 14,804.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.86 : 28,867.05 = 9,883.28 : x
  2. Step 2: Convert to fraction form
    19,271.86/28,867.05 = 9,883.28/x
  3. Step 3: Cross multiply
    19,271.86x = 28,867.05 × 9,883.28
  4. Step 4: Simplify right side
    19,271.86x = 285,301,210.09
  5. Step 5: Solve for x
    x = 285,301,210.09/19,271.86
  6. Step 6: Final answer
    x = 14,804.03

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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.