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Finding the Fourth Proportional to 13,802.95, 19,041.69 and 8,133.82

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Solution

The fourth proportional to 13,802.95, 19,041.69 and 8,133.82 is: 11,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,802.95 : 19,041.69 = 8,133.82 : x
  2. Step 2: Convert to fraction form
    13,802.95/19,041.69 = 8,133.82/x
  3. Step 3: Cross multiply
    13,802.95x = 19,041.69 × 8,133.82
  4. Step 4: Simplify right side
    13,802.95x = 154,881,678.96
  5. Step 5: Solve for x
    x = 154,881,678.96/13,802.95
  6. Step 6: Final answer
    x = 11,220.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.