Home / 28,413.42-39,210.51-15,666.81

Finding the Fourth Proportional to 28,413.42, 39,210.51 and 15,666.81

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Solution

The fourth proportional to 28,413.42, 39,210.51 and 15,666.81 is: 21,620.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.42 : 39,210.51 = 15,666.81 : x
  2. Step 2: Convert to fraction form
    28,413.42/39,210.51 = 15,666.81/x
  3. Step 3: Cross multiply
    28,413.42x = 39,210.51 × 15,666.81
  4. Step 4: Simplify right side
    28,413.42x = 614,303,610.17
  5. Step 5: Solve for x
    x = 614,303,610.17/28,413.42
  6. Step 6: Final answer
    x = 21,620.19

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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.