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Finding the Fourth Proportional to 13,809.70, 20,696.07 and 5,036.34

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Solution

The fourth proportional to 13,809.70, 20,696.07 and 5,036.34 is: 7,547.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.70 : 20,696.07 = 5,036.34 : x
  2. Step 2: Convert to fraction form
    13,809.70/20,696.07 = 5,036.34/x
  3. Step 3: Cross multiply
    13,809.70x = 20,696.07 × 5,036.34
  4. Step 4: Simplify right side
    13,809.70x = 104,232,445.18
  5. Step 5: Solve for x
    x = 104,232,445.18/13,809.70
  6. Step 6: Final answer
    x = 7,547.77

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.