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Finding the Fourth Proportional to 19,228.16, 28,846.88 and 7,220.41

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Solution

The fourth proportional to 19,228.16, 28,846.88 and 7,220.41 is: 10,832.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,228.16 : 28,846.88 = 7,220.41 : x
  2. Step 2: Convert to fraction form
    19,228.16/28,846.88 = 7,220.41/x
  3. Step 3: Cross multiply
    19,228.16x = 28,846.88 × 7,220.41
  4. Step 4: Simplify right side
    19,228.16x = 208,286,300.82
  5. Step 5: Solve for x
    x = 208,286,300.82/19,228.16
  6. Step 6: Final answer
    x = 10,832.36

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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.