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Finding the Fourth Proportional to 12,699.99, 19,071.69 and 8,265.24

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Solution

The fourth proportional to 12,699.99, 19,071.69 and 8,265.24 is: 12,411.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.99 : 19,071.69 = 8,265.24 : x
  2. Step 2: Convert to fraction form
    12,699.99/19,071.69 = 8,265.24/x
  3. Step 3: Cross multiply
    12,699.99x = 19,071.69 × 8,265.24
  4. Step 4: Simplify right side
    12,699.99x = 157,632,095.06
  5. Step 5: Solve for x
    x = 157,632,095.06/12,699.99
  6. Step 6: Final answer
    x = 12,411.99

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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.