Home / 15,517.02-21,413.70-8,802.50

Finding the Fourth Proportional to 15,517.02, 21,413.70 and 8,802.50

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Solution

The fourth proportional to 15,517.02, 21,413.70 and 8,802.50 is: 12,147.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.02 : 21,413.70 = 8,802.50 : x
  2. Step 2: Convert to fraction form
    15,517.02/21,413.70 = 8,802.50/x
  3. Step 3: Cross multiply
    15,517.02x = 21,413.70 × 8,802.50
  4. Step 4: Simplify right side
    15,517.02x = 188,494,094.25
  5. Step 5: Solve for x
    x = 188,494,094.25/15,517.02
  6. Step 6: Final answer
    x = 12,147.57

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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.