Home / 30,071.22-41,478.93-20,644.98

Finding the Fourth Proportional to 30,071.22, 41,478.93 and 20,644.98

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Solution

The fourth proportional to 30,071.22, 41,478.93 and 20,644.98 is: 28,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,071.22 : 41,478.93 = 20,644.98 : x
  2. Step 2: Convert to fraction form
    30,071.22/41,478.93 = 20,644.98/x
  3. Step 3: Cross multiply
    30,071.22x = 41,478.93 × 20,644.98
  4. Step 4: Simplify right side
    30,071.22x = 856,331,680.27
  5. Step 5: Solve for x
    x = 856,331,680.27/30,071.22
  6. Step 6: Final answer
    x = 28,476.79

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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.