Home / 10,355.29-14,290.32-5,639.56

Finding the Fourth Proportional to 10,355.29, 14,290.32 and 5,639.56

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Solution

The fourth proportional to 10,355.29, 14,290.32 and 5,639.56 is: 7,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.29 : 14,290.32 = 5,639.56 : x
  2. Step 2: Convert to fraction form
    10,355.29/14,290.32 = 5,639.56/x
  3. Step 3: Cross multiply
    10,355.29x = 14,290.32 × 5,639.56
  4. Step 4: Simplify right side
    10,355.29x = 80,591,117.06
  5. Step 5: Solve for x
    x = 80,591,117.06/10,355.29
  6. Step 6: Final answer
    x = 7,782.60

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