Home / 28,271.76-39,009.96-18,330

Finding the Fourth Proportional to 28,271.76, 39,009.96 and 18,330

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Solution

The fourth proportional to 28,271.76, 39,009.96 and 18,330 is: 25,292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.76 : 39,009.96 = 18,330 : x
  2. Step 2: Convert to fraction form
    28,271.76/39,009.96 = 18,330/x
  3. Step 3: Cross multiply
    28,271.76x = 39,009.96 × 18,330
  4. Step 4: Simplify right side
    28,271.76x = 715,052,566.80
  5. Step 5: Solve for x
    x = 715,052,566.80/28,271.76
  6. Step 6: Final answer
    x = 25,292.11

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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.