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Finding the Fourth Proportional to 14,289.96, 21,405.06 and 9,069.96

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Solution

The fourth proportional to 14,289.96, 21,405.06 and 9,069.96 is: 13,585.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.96 : 21,405.06 = 9,069.96 : x
  2. Step 2: Convert to fraction form
    14,289.96/21,405.06 = 9,069.96/x
  3. Step 3: Cross multiply
    14,289.96x = 21,405.06 × 9,069.96
  4. Step 4: Simplify right side
    14,289.96x = 194,143,038.00
  5. Step 5: Solve for x
    x = 194,143,038.00/14,289.96
  6. Step 6: Final answer
    x = 13,585.97

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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.