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Finding the Fourth Proportional to 14,355.51, 21,516.86 and 8,812.83

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Solution

The fourth proportional to 14,355.51, 21,516.86 and 8,812.83 is: 13,209.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.51 : 21,516.86 = 8,812.83 : x
  2. Step 2: Convert to fraction form
    14,355.51/21,516.86 = 8,812.83/x
  3. Step 3: Cross multiply
    14,355.51x = 21,516.86 × 8,812.83
  4. Step 4: Simplify right side
    14,355.51x = 189,624,385.25
  5. Step 5: Solve for x
    x = 189,624,385.25/14,355.51
  6. Step 6: Final answer
    x = 13,209.17

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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.