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Finding the Fourth Proportional to 14,653.58, 21,929.31 and 11,990.30

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Solution

The fourth proportional to 14,653.58, 21,929.31 and 11,990.30 is: 17,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.58 : 21,929.31 = 11,990.30 : x
  2. Step 2: Convert to fraction form
    14,653.58/21,929.31 = 11,990.30/x
  3. Step 3: Cross multiply
    14,653.58x = 21,929.31 × 11,990.30
  4. Step 4: Simplify right side
    14,653.58x = 262,938,896.05
  5. Step 5: Solve for x
    x = 262,938,896.05/14,653.58
  6. Step 6: Final answer
    x = 17,943.67

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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.