Home / 28,163.86-38,866.74-15,588.61

Finding the Fourth Proportional to 28,163.86, 38,866.74 and 15,588.61

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Solution

The fourth proportional to 28,163.86, 38,866.74 and 15,588.61 is: 21,512.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.86 : 38,866.74 = 15,588.61 : x
  2. Step 2: Convert to fraction form
    28,163.86/38,866.74 = 15,588.61/x
  3. Step 3: Cross multiply
    28,163.86x = 38,866.74 × 15,588.61
  4. Step 4: Simplify right side
    28,163.86x = 605,878,373.89
  5. Step 5: Solve for x
    x = 605,878,373.89/28,163.86
  6. Step 6: Final answer
    x = 21,512.62

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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.