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Finding the Fourth Proportional to 14,069.99, 21,089.79 and 9,143.16

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Solution

The fourth proportional to 14,069.99, 21,089.79 and 9,143.16 is: 13,704.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,069.99 : 21,089.79 = 9,143.16 : x
  2. Step 2: Convert to fraction form
    14,069.99/21,089.79 = 9,143.16/x
  3. Step 3: Cross multiply
    14,069.99x = 21,089.79 × 9,143.16
  4. Step 4: Simplify right side
    14,069.99x = 192,827,324.34
  5. Step 5: Solve for x
    x = 192,827,324.34/14,069.99
  6. Step 6: Final answer
    x = 13,704.87

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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.