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Finding the Fourth Proportional to 19,223.70, 28,835.55 and 8,127.51

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Solution

The fourth proportional to 19,223.70, 28,835.55 and 8,127.51 is: 12,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,223.70 : 28,835.55 = 8,127.51 : x
  2. Step 2: Convert to fraction form
    19,223.70/28,835.55 = 8,127.51/x
  3. Step 3: Cross multiply
    19,223.70x = 28,835.55 × 8,127.51
  4. Step 4: Simplify right side
    19,223.70x = 234,361,220.98
  5. Step 5: Solve for x
    x = 234,361,220.98/19,223.70
  6. Step 6: Final answer
    x = 12,191.27

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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.