Home / 28,413.77-39,208.80-15,666.92

Finding the Fourth Proportional to 28,413.77, 39,208.80 and 15,666.92

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Solution

The fourth proportional to 28,413.77, 39,208.80 and 15,666.92 is: 21,619.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.77 : 39,208.80 = 15,666.92 : x
  2. Step 2: Convert to fraction form
    28,413.77/39,208.80 = 15,666.92/x
  3. Step 3: Cross multiply
    28,413.77x = 39,208.80 × 15,666.92
  4. Step 4: Simplify right side
    28,413.77x = 614,281,132.90
  5. Step 5: Solve for x
    x = 614,281,132.90/28,413.77
  6. Step 6: Final answer
    x = 21,619.14

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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.