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Finding the Fourth Proportional to 30,339.66, 45,453.94 and 21,998.95

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Solution

The fourth proportional to 30,339.66, 45,453.94 and 21,998.95 is: 32,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.66 : 45,453.94 = 21,998.95 : x
  2. Step 2: Convert to fraction form
    30,339.66/45,453.94 = 21,998.95/x
  3. Step 3: Cross multiply
    30,339.66x = 45,453.94 × 21,998.95
  4. Step 4: Simplify right side
    30,339.66x = 999,938,953.36
  5. Step 5: Solve for x
    x = 999,938,953.36/30,339.66
  6. Step 6: Final answer
    x = 32,958.15

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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.