Home / 13,145.85-19,721.93-4,380.84

Finding the Fourth Proportional to 13,145.85, 19,721.93 and 4,380.84

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Solution

The fourth proportional to 13,145.85, 19,721.93 and 4,380.84 is: 6,572.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.85 : 19,721.93 = 4,380.84 : x
  2. Step 2: Convert to fraction form
    13,145.85/19,721.93 = 4,380.84/x
  3. Step 3: Cross multiply
    13,145.85x = 19,721.93 × 4,380.84
  4. Step 4: Simplify right side
    13,145.85x = 86,398,597.92
  5. Step 5: Solve for x
    x = 86,398,597.92/13,145.85
  6. Step 6: Final answer
    x = 6,572.31

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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.