Home / 19,271.10-28,906.65-9,405.30

Finding the Fourth Proportional to 19,271.10, 28,906.65 and 9,405.30

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Solution

The fourth proportional to 19,271.10, 28,906.65 and 9,405.30 is: 14,107.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.10 : 28,906.65 = 9,405.30 : x
  2. Step 2: Convert to fraction form
    19,271.10/28,906.65 = 9,405.30/x
  3. Step 3: Cross multiply
    19,271.10x = 28,906.65 × 9,405.30
  4. Step 4: Simplify right side
    19,271.10x = 271,875,715.25
  5. Step 5: Solve for x
    x = 271,875,715.25/19,271.10
  6. Step 6: Final answer
    x = 14,107.95

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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.