Home / 13,383.45-20,069.98-7,140.05

Finding the Fourth Proportional to 13,383.45, 20,069.98 and 7,140.05

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Solution

The fourth proportional to 13,383.45, 20,069.98 and 7,140.05 is: 10,707.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.45 : 20,069.98 = 7,140.05 : x
  2. Step 2: Convert to fraction form
    13,383.45/20,069.98 = 7,140.05/x
  3. Step 3: Cross multiply
    13,383.45x = 20,069.98 × 7,140.05
  4. Step 4: Simplify right side
    13,383.45x = 143,300,693.02
  5. Step 5: Solve for x
    x = 143,300,693.02/13,383.45
  6. Step 6: Final answer
    x = 10,707.31

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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.