Home / 19,331.60-28,975.80-11,015.60

Finding the Fourth Proportional to 19,331.60, 28,975.80 and 11,015.60

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Solution

The fourth proportional to 19,331.60, 28,975.80 and 11,015.60 is: 16,511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.60 : 28,975.80 = 11,015.60 : x
  2. Step 2: Convert to fraction form
    19,331.60/28,975.80 = 11,015.60/x
  3. Step 3: Cross multiply
    19,331.60x = 28,975.80 × 11,015.60
  4. Step 4: Simplify right side
    19,331.60x = 319,185,822.48
  5. Step 5: Solve for x
    x = 319,185,822.48/19,331.60
  6. Step 6: Final answer
    x = 16,511.09

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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.