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Finding the Fourth Proportional to 14,990.58, 20,705.37 and 11,230.56

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Solution

The fourth proportional to 14,990.58, 20,705.37 and 11,230.56 is: 15,511.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.58 : 20,705.37 = 11,230.56 : x
  2. Step 2: Convert to fraction form
    14,990.58/20,705.37 = 11,230.56/x
  3. Step 3: Cross multiply
    14,990.58x = 20,705.37 × 11,230.56
  4. Step 4: Simplify right side
    14,990.58x = 232,532,900.11
  5. Step 5: Solve for x
    x = 232,532,900.11/14,990.58
  6. Step 6: Final answer
    x = 15,511.93

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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.