Home / 13,421.57-20,090.43-9,237.11

Finding the Fourth Proportional to 13,421.57, 20,090.43 and 9,237.11

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Solution

The fourth proportional to 13,421.57, 20,090.43 and 9,237.11 is: 13,826.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.57 : 20,090.43 = 9,237.11 : x
  2. Step 2: Convert to fraction form
    13,421.57/20,090.43 = 9,237.11/x
  3. Step 3: Cross multiply
    13,421.57x = 20,090.43 × 9,237.11
  4. Step 4: Simplify right side
    13,421.57x = 185,577,511.86
  5. Step 5: Solve for x
    x = 185,577,511.86/13,421.57
  6. Step 6: Final answer
    x = 13,826.81

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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.