Home / 21,280.10-29,366.26-11,719.81

Finding the Fourth Proportional to 21,280.10, 29,366.26 and 11,719.81

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Solution

The fourth proportional to 21,280.10, 29,366.26 and 11,719.81 is: 16,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.10 : 29,366.26 = 11,719.81 : x
  2. Step 2: Convert to fraction form
    21,280.10/29,366.26 = 11,719.81/x
  3. Step 3: Cross multiply
    21,280.10x = 29,366.26 × 11,719.81
  4. Step 4: Simplify right side
    21,280.10x = 344,166,895.76
  5. Step 5: Solve for x
    x = 344,166,895.76/21,280.10
  6. Step 6: Final answer
    x = 16,173.18

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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.