Home / 11,280.30-16,916.40-5,731.80

Finding the Fourth Proportional to 11,280.30, 16,916.40 and 5,731.80

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Solution

The fourth proportional to 11,280.30, 16,916.40 and 5,731.80 is: 8,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.30 : 16,916.40 = 5,731.80 : x
  2. Step 2: Convert to fraction form
    11,280.30/16,916.40 = 5,731.80/x
  3. Step 3: Cross multiply
    11,280.30x = 16,916.40 × 5,731.80
  4. Step 4: Simplify right side
    11,280.30x = 96,961,421.52
  5. Step 5: Solve for x
    x = 96,961,421.52/11,280.30
  6. Step 6: Final answer
    x = 8,595.64

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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.