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Finding the Fourth Proportional to 12,881.67, 19,293.96 and 9,898.15

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Solution

The fourth proportional to 12,881.67, 19,293.96 and 9,898.15 is: 14,825.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.67 : 19,293.96 = 9,898.15 : x
  2. Step 2: Convert to fraction form
    12,881.67/19,293.96 = 9,898.15/x
  3. Step 3: Cross multiply
    12,881.67x = 19,293.96 × 9,898.15
  4. Step 4: Simplify right side
    12,881.67x = 190,974,510.17
  5. Step 5: Solve for x
    x = 190,974,510.17/12,881.67
  6. Step 6: Final answer
    x = 14,825.29

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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.