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Finding the Fourth Proportional to 14,438.70, 19,926.81 and 8,772.21

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Solution

The fourth proportional to 14,438.70, 19,926.81 and 8,772.21 is: 12,106.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,438.70 : 19,926.81 = 8,772.21 : x
  2. Step 2: Convert to fraction form
    14,438.70/19,926.81 = 8,772.21/x
  3. Step 3: Cross multiply
    14,438.70x = 19,926.81 × 8,772.21
  4. Step 4: Simplify right side
    14,438.70x = 174,802,161.95
  5. Step 5: Solve for x
    x = 174,802,161.95/14,438.70
  6. Step 6: Final answer
    x = 12,106.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.