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Finding the Fourth Proportional to 19,063.74, 28,599.21 and 7,221.06

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Solution

The fourth proportional to 19,063.74, 28,599.21 and 7,221.06 is: 10,832.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,063.74 : 28,599.21 = 7,221.06 : x
  2. Step 2: Convert to fraction form
    19,063.74/28,599.21 = 7,221.06/x
  3. Step 3: Cross multiply
    19,063.74x = 28,599.21 × 7,221.06
  4. Step 4: Simplify right side
    19,063.74x = 206,516,575.26
  5. Step 5: Solve for x
    x = 206,516,575.26/19,063.74
  6. Step 6: Final answer
    x = 10,832.95

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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.