Home / 19,860.51-27,413.65-12,786.92

Finding the Fourth Proportional to 19,860.51, 27,413.65 and 12,786.92

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Solution

The fourth proportional to 19,860.51, 27,413.65 and 12,786.92 is: 17,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.51 : 27,413.65 = 12,786.92 : x
  2. Step 2: Convert to fraction form
    19,860.51/27,413.65 = 12,786.92/x
  3. Step 3: Cross multiply
    19,860.51x = 27,413.65 × 12,786.92
  4. Step 4: Simplify right side
    19,860.51x = 350,536,149.46
  5. Step 5: Solve for x
    x = 350,536,149.46/19,860.51
  6. Step 6: Final answer
    x = 17,649.91

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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.