Home / 21,074.07-31,457.38-18,413.84

Finding the Fourth Proportional to 21,074.07, 31,457.38 and 18,413.84

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Solution

The fourth proportional to 21,074.07, 31,457.38 and 18,413.84 is: 27,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.07 : 31,457.38 = 18,413.84 : x
  2. Step 2: Convert to fraction form
    21,074.07/31,457.38 = 18,413.84/x
  3. Step 3: Cross multiply
    21,074.07x = 31,457.38 × 18,413.84
  4. Step 4: Simplify right side
    21,074.07x = 579,251,195.83
  5. Step 5: Solve for x
    x = 579,251,195.83/21,074.07
  6. Step 6: Final answer
    x = 27,486.44

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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.