Home / 28,357.14-39,131.19-16,419.63

Finding the Fourth Proportional to 28,357.14, 39,131.19 and 16,419.63

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Solution

The fourth proportional to 28,357.14, 39,131.19 and 16,419.63 is: 22,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.14 : 39,131.19 = 16,419.63 : x
  2. Step 2: Convert to fraction form
    28,357.14/39,131.19 = 16,419.63/x
  3. Step 3: Cross multiply
    28,357.14x = 39,131.19 × 16,419.63
  4. Step 4: Simplify right side
    28,357.14x = 642,519,661.26
  5. Step 5: Solve for x
    x = 642,519,661.26/28,357.14
  6. Step 6: Final answer
    x = 22,658.13

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Double scale
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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.