Home / 13,744.81-20,603.38-5,430.73

Finding the Fourth Proportional to 13,744.81, 20,603.38 and 5,430.73

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Solution

The fourth proportional to 13,744.81, 20,603.38 and 5,430.73 is: 8,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,744.81 : 20,603.38 = 5,430.73 : x
  2. Step 2: Convert to fraction form
    13,744.81/20,603.38 = 5,430.73/x
  3. Step 3: Cross multiply
    13,744.81x = 20,603.38 × 5,430.73
  4. Step 4: Simplify right side
    13,744.81x = 111,891,393.87
  5. Step 5: Solve for x
    x = 111,891,393.87/13,744.81
  6. Step 6: Final answer
    x = 8,140.63

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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.