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Finding the Fourth Proportional to 14,490.09, 19,998.09 and 8,521.47

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Solution

The fourth proportional to 14,490.09, 19,998.09 and 8,521.47 is: 11,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.09 : 19,998.09 = 8,521.47 : x
  2. Step 2: Convert to fraction form
    14,490.09/19,998.09 = 8,521.47/x
  3. Step 3: Cross multiply
    14,490.09x = 19,998.09 × 8,521.47
  4. Step 4: Simplify right side
    14,490.09x = 170,413,123.99
  5. Step 5: Solve for x
    x = 170,413,123.99/14,490.09
  6. Step 6: Final answer
    x = 11,760.67

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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.