Home / 11,271.60-16,907.40-8,355.60

Finding the Fourth Proportional to 11,271.60, 16,907.40 and 8,355.60

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Solution

The fourth proportional to 11,271.60, 16,907.40 and 8,355.60 is: 12,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.60 : 16,907.40 = 8,355.60 : x
  2. Step 2: Convert to fraction form
    11,271.60/16,907.40 = 8,355.60/x
  3. Step 3: Cross multiply
    11,271.60x = 16,907.40 × 8,355.60
  4. Step 4: Simplify right side
    11,271.60x = 141,271,471.44
  5. Step 5: Solve for x
    x = 141,271,471.44/11,271.60
  6. Step 6: Final answer
    x = 12,533.40

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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.