Home / 13,145.92-19,720.23-4,260.58

Finding the Fourth Proportional to 13,145.92, 19,720.23 and 4,260.58

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Solution

The fourth proportional to 13,145.92, 19,720.23 and 4,260.58 is: 6,391.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.92 : 19,720.23 = 4,260.58 : x
  2. Step 2: Convert to fraction form
    13,145.92/19,720.23 = 4,260.58/x
  3. Step 3: Cross multiply
    13,145.92x = 19,720.23 × 4,260.58
  4. Step 4: Simplify right side
    13,145.92x = 84,019,617.53
  5. Step 5: Solve for x
    x = 84,019,617.53/13,145.92
  6. Step 6: Final answer
    x = 6,391.31

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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.