Home / 21,045.33-31,413.78-18,554.04

Finding the Fourth Proportional to 21,045.33, 31,413.78 and 18,554.04

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Solution

The fourth proportional to 21,045.33, 31,413.78 and 18,554.04 is: 27,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.33 : 31,413.78 = 18,554.04 : x
  2. Step 2: Convert to fraction form
    21,045.33/31,413.78 = 18,554.04/x
  3. Step 3: Cross multiply
    21,045.33x = 31,413.78 × 18,554.04
  4. Step 4: Simplify right side
    21,045.33x = 582,852,530.67
  5. Step 5: Solve for x
    x = 582,852,530.67/21,045.33
  6. Step 6: Final answer
    x = 27,695.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.