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Finding the Fourth Proportional to 12,802.88, 19,214.88 and 9,898.88

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Solution

The fourth proportional to 12,802.88, 19,214.88 and 9,898.88 is: 14,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,802.88 : 19,214.88 = 9,898.88 : x
  2. Step 2: Convert to fraction form
    12,802.88/19,214.88 = 9,898.88/x
  3. Step 3: Cross multiply
    12,802.88x = 19,214.88 × 9,898.88
  4. Step 4: Simplify right side
    12,802.88x = 190,205,791.33
  5. Step 5: Solve for x
    x = 190,205,791.33/12,802.88
  6. Step 6: Final answer
    x = 14,856.48

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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.