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Finding the Fourth Proportional to 19,009.88, 28,486.99 and 10,706.09

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Solution

The fourth proportional to 19,009.88, 28,486.99 and 10,706.09 is: 16,043.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.88 : 28,486.99 = 10,706.09 : x
  2. Step 2: Convert to fraction form
    19,009.88/28,486.99 = 10,706.09/x
  3. Step 3: Cross multiply
    19,009.88x = 28,486.99 × 10,706.09
  4. Step 4: Simplify right side
    19,009.88x = 304,984,278.77
  5. Step 5: Solve for x
    x = 304,984,278.77/19,009.88
  6. Step 6: Final answer
    x = 16,043.46

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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.