Home / 20,485.44-28,270.40-11,533.24

Finding the Fourth Proportional to 20,485.44, 28,270.40 and 11,533.24

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Solution

The fourth proportional to 20,485.44, 28,270.40 and 11,533.24 is: 15,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.44 : 28,270.40 = 11,533.24 : x
  2. Step 2: Convert to fraction form
    20,485.44/28,270.40 = 11,533.24/x
  3. Step 3: Cross multiply
    20,485.44x = 28,270.40 × 11,533.24
  4. Step 4: Simplify right side
    20,485.44x = 326,049,308.10
  5. Step 5: Solve for x
    x = 326,049,308.10/20,485.44
  6. Step 6: Final answer
    x = 15,916.15

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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.