Home / 13,435.40-20,153.10-7,214.60

Finding the Fourth Proportional to 13,435.40, 20,153.10 and 7,214.60

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Solution

The fourth proportional to 13,435.40, 20,153.10 and 7,214.60 is: 10,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.40 : 20,153.10 = 7,214.60 : x
  2. Step 2: Convert to fraction form
    13,435.40/20,153.10 = 7,214.60/x
  3. Step 3: Cross multiply
    13,435.40x = 20,153.10 × 7,214.60
  4. Step 4: Simplify right side
    13,435.40x = 145,396,555.26
  5. Step 5: Solve for x
    x = 145,396,555.26/13,435.40
  6. Step 6: Final answer
    x = 10,821.90

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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.