Home / 27,988.68-38,623.86-15,413.16

Finding the Fourth Proportional to 27,988.68, 38,623.86 and 15,413.16

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Solution

The fourth proportional to 27,988.68, 38,623.86 and 15,413.16 is: 21,269.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.68 : 38,623.86 = 15,413.16 : x
  2. Step 2: Convert to fraction form
    27,988.68/38,623.86 = 15,413.16/x
  3. Step 3: Cross multiply
    27,988.68x = 38,623.86 × 15,413.16
  4. Step 4: Simplify right side
    27,988.68x = 595,315,734.00
  5. Step 5: Solve for x
    x = 595,315,734.00/27,988.68
  6. Step 6: Final answer
    x = 21,269.88

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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.