Home / 13,720.81-18,934.73-7,433.19

Finding the Fourth Proportional to 13,720.81, 18,934.73 and 7,433.19

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Solution

The fourth proportional to 13,720.81, 18,934.73 and 7,433.19 is: 10,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.81 : 18,934.73 = 7,433.19 : x
  2. Step 2: Convert to fraction form
    13,720.81/18,934.73 = 7,433.19/x
  3. Step 3: Cross multiply
    13,720.81x = 18,934.73 × 7,433.19
  4. Step 4: Simplify right side
    13,720.81x = 140,745,445.69
  5. Step 5: Solve for x
    x = 140,745,445.69/13,720.81
  6. Step 6: Final answer
    x = 10,257.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.