Home / 28,328.16-39,054.20-20,761.14

Finding the Fourth Proportional to 28,328.16, 39,054.20 and 20,761.14

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Solution

The fourth proportional to 28,328.16, 39,054.20 and 20,761.14 is: 28,622.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.16 : 39,054.20 = 20,761.14 : x
  2. Step 2: Convert to fraction form
    28,328.16/39,054.20 = 20,761.14/x
  3. Step 3: Cross multiply
    28,328.16x = 39,054.20 × 20,761.14
  4. Step 4: Simplify right side
    28,328.16x = 810,809,713.79
  5. Step 5: Solve for x
    x = 810,809,713.79/28,328.16
  6. Step 6: Final answer
    x = 28,622.04

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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.