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Finding the Fourth Proportional to 19,004.22, 28,511.55 and 7,916.10

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Solution

The fourth proportional to 19,004.22, 28,511.55 and 7,916.10 is: 11,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,004.22 : 28,511.55 = 7,916.10 : x
  2. Step 2: Convert to fraction form
    19,004.22/28,511.55 = 7,916.10/x
  3. Step 3: Cross multiply
    19,004.22x = 28,511.55 × 7,916.10
  4. Step 4: Simplify right side
    19,004.22x = 225,700,280.96
  5. Step 5: Solve for x
    x = 225,700,280.96/19,004.22
  6. Step 6: Final answer
    x = 11,876.32

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1.5x scale

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.