Home / 12,916.64-19,331.76-11,355.68

Finding the Fourth Proportional to 12,916.64, 19,331.76 and 11,355.68

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Solution

The fourth proportional to 12,916.64, 19,331.76 and 11,355.68 is: 16,995.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.64 : 19,331.76 = 11,355.68 : x
  2. Step 2: Convert to fraction form
    12,916.64/19,331.76 = 11,355.68/x
  3. Step 3: Cross multiply
    12,916.64x = 19,331.76 × 11,355.68
  4. Step 4: Simplify right side
    12,916.64x = 219,525,280.40
  5. Step 5: Solve for x
    x = 219,525,280.40/12,916.64
  6. Step 6: Final answer
    x = 16,995.54

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Why These Related Problems?

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