Home / 12,486.23-17,231.02-6,821.02

Finding the Fourth Proportional to 12,486.23, 17,231.02 and 6,821.02

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Solution

The fourth proportional to 12,486.23, 17,231.02 and 6,821.02 is: 9,413.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.23 : 17,231.02 = 6,821.02 : x
  2. Step 2: Convert to fraction form
    12,486.23/17,231.02 = 6,821.02/x
  3. Step 3: Cross multiply
    12,486.23x = 17,231.02 × 6,821.02
  4. Step 4: Simplify right side
    12,486.23x = 117,533,071.91
  5. Step 5: Solve for x
    x = 117,533,071.91/12,486.23
  6. Step 6: Final answer
    x = 9,413.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.