Home / 20,866.02-28,795.92-11,913.60

Finding the Fourth Proportional to 20,866.02, 28,795.92 and 11,913.60

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Solution

The fourth proportional to 20,866.02, 28,795.92 and 11,913.60 is: 16,441.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.02 : 28,795.92 = 11,913.60 : x
  2. Step 2: Convert to fraction form
    20,866.02/28,795.92 = 11,913.60/x
  3. Step 3: Cross multiply
    20,866.02x = 28,795.92 × 11,913.60
  4. Step 4: Simplify right side
    20,866.02x = 343,063,072.51
  5. Step 5: Solve for x
    x = 343,063,072.51/20,866.02
  6. Step 6: Final answer
    x = 16,441.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.