Home / 13,403.34-20,114.73-9,428.47

Finding the Fourth Proportional to 13,403.34, 20,114.73 and 9,428.47

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Solution

The fourth proportional to 13,403.34, 20,114.73 and 9,428.47 is: 14,149.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.34 : 20,114.73 = 9,428.47 : x
  2. Step 2: Convert to fraction form
    13,403.34/20,114.73 = 9,428.47/x
  3. Step 3: Cross multiply
    13,403.34x = 20,114.73 × 9,428.47
  4. Step 4: Simplify right side
    13,403.34x = 189,651,078.08
  5. Step 5: Solve for x
    x = 189,651,078.08/13,403.34
  6. Step 6: Final answer
    x = 14,149.54

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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.