Home / 11,280.80-16,904.72-10,657.60

Finding the Fourth Proportional to 11,280.80, 16,904.72 and 10,657.60

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Solution

The fourth proportional to 11,280.80, 16,904.72 and 10,657.60 is: 15,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.80 : 16,904.72 = 10,657.60 : x
  2. Step 2: Convert to fraction form
    11,280.80/16,904.72 = 10,657.60/x
  3. Step 3: Cross multiply
    11,280.80x = 16,904.72 × 10,657.60
  4. Step 4: Simplify right side
    11,280.80x = 180,163,743.87
  5. Step 5: Solve for x
    x = 180,163,743.87/11,280.80
  6. Step 6: Final answer
    x = 15,970.83

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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.