Home / 20,837.37-28,751.13-12,342.18

Finding the Fourth Proportional to 20,837.37, 28,751.13 and 12,342.18

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Solution

The fourth proportional to 20,837.37, 28,751.13 and 12,342.18 is: 17,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.37 : 28,751.13 = 12,342.18 : x
  2. Step 2: Convert to fraction form
    20,837.37/28,751.13 = 12,342.18/x
  3. Step 3: Cross multiply
    20,837.37x = 28,751.13 × 12,342.18
  4. Step 4: Simplify right side
    20,837.37x = 354,851,621.66
  5. Step 5: Solve for x
    x = 354,851,621.66/20,837.37
  6. Step 6: Final answer
    x = 17,029.58

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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.