Home / 28,290.32-39,039.08-15,714.26

Finding the Fourth Proportional to 28,290.32, 39,039.08 and 15,714.26

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Solution

The fourth proportional to 28,290.32, 39,039.08 and 15,714.26 is: 21,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.32 : 39,039.08 = 15,714.26 : x
  2. Step 2: Convert to fraction form
    28,290.32/39,039.08 = 15,714.26/x
  3. Step 3: Cross multiply
    28,290.32x = 39,039.08 × 15,714.26
  4. Step 4: Simplify right side
    28,290.32x = 613,470,253.28
  5. Step 5: Solve for x
    x = 613,470,253.28/28,290.32
  6. Step 6: Final answer
    x = 21,684.81

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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.