Home / 13,856.03-20,783.41-5,090.30

Finding the Fourth Proportional to 13,856.03, 20,783.41 and 5,090.30

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Solution

The fourth proportional to 13,856.03, 20,783.41 and 5,090.30 is: 7,635.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.03 : 20,783.41 = 5,090.30 : x
  2. Step 2: Convert to fraction form
    13,856.03/20,783.41 = 5,090.30/x
  3. Step 3: Cross multiply
    13,856.03x = 20,783.41 × 5,090.30
  4. Step 4: Simplify right side
    13,856.03x = 105,793,662.55
  5. Step 5: Solve for x
    x = 105,793,662.55/13,856.03
  6. Step 6: Final answer
    x = 7,635.21

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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.