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Finding the Fourth Proportional to 12,852.30, 18,007.80 and 12,852.30

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Solution

The fourth proportional to 12,852.30, 18,007.80 and 12,852.30 is: 18,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,852.30 : 18,007.80 = 12,852.30 : x
  2. Step 2: Convert to fraction form
    12,852.30/18,007.80 = 12,852.30/x
  3. Step 3: Cross multiply
    12,852.30x = 18,007.80 × 12,852.30
  4. Step 4: Simplify right side
    12,852.30x = 231,441,647.94
  5. Step 5: Solve for x
    x = 231,441,647.94/12,852.30
  6. Step 6: Final answer
    x = 18,007.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.