Home / 20,643.22-31,039.53-19,019.35

Finding the Fourth Proportional to 20,643.22, 31,039.53 and 19,019.35

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Solution

The fourth proportional to 20,643.22, 31,039.53 and 19,019.35 is: 28,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.22 : 31,039.53 = 19,019.35 : x
  2. Step 2: Convert to fraction form
    20,643.22/31,039.53 = 19,019.35/x
  3. Step 3: Cross multiply
    20,643.22x = 31,039.53 × 19,019.35
  4. Step 4: Simplify right side
    20,643.22x = 590,351,684.91
  5. Step 5: Solve for x
    x = 590,351,684.91/20,643.22
  6. Step 6: Final answer
    x = 28,597.85

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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.