Home / 13,430.14-20,145.61-6,410.90

Finding the Fourth Proportional to 13,430.14, 20,145.61 and 6,410.90

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Solution

The fourth proportional to 13,430.14, 20,145.61 and 6,410.90 is: 9,616.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.14 : 20,145.61 = 6,410.90 : x
  2. Step 2: Convert to fraction form
    13,430.14/20,145.61 = 6,410.90/x
  3. Step 3: Cross multiply
    13,430.14x = 20,145.61 × 6,410.90
  4. Step 4: Simplify right side
    13,430.14x = 129,151,491.15
  5. Step 5: Solve for x
    x = 129,151,491.15/13,430.14
  6. Step 6: Final answer
    x = 9,616.54

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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.