Home / 15,724.23-21,688.46-10,679.72

Finding the Fourth Proportional to 15,724.23, 21,688.46 and 10,679.72

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Solution

The fourth proportional to 15,724.23, 21,688.46 and 10,679.72 is: 14,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.23 : 21,688.46 = 10,679.72 : x
  2. Step 2: Convert to fraction form
    15,724.23/21,688.46 = 10,679.72/x
  3. Step 3: Cross multiply
    15,724.23x = 21,688.46 × 10,679.72
  4. Step 4: Simplify right side
    15,724.23x = 231,626,558.24
  5. Step 5: Solve for x
    x = 231,626,558.24/15,724.23
  6. Step 6: Final answer
    x = 14,730.55

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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.