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Finding the Fourth Proportional to 19,014.51, 28,529.07 and 7,918.23

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Solution

The fourth proportional to 19,014.51, 28,529.07 and 7,918.23 is: 11,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,014.51 : 28,529.07 = 7,918.23 : x
  2. Step 2: Convert to fraction form
    19,014.51/28,529.07 = 7,918.23/x
  3. Step 3: Cross multiply
    19,014.51x = 28,529.07 × 7,918.23
  4. Step 4: Simplify right side
    19,014.51x = 225,899,737.95
  5. Step 5: Solve for x
    x = 225,899,737.95/19,014.51
  6. Step 6: Final answer
    x = 11,880.39

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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.