Home / 28,757.07-39,678.68-16,818.02

Finding the Fourth Proportional to 28,757.07, 39,678.68 and 16,818.02

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Solution

The fourth proportional to 28,757.07, 39,678.68 and 16,818.02 is: 23,205.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,757.07 : 39,678.68 = 16,818.02 : x
  2. Step 2: Convert to fraction form
    28,757.07/39,678.68 = 16,818.02/x
  3. Step 3: Cross multiply
    28,757.07x = 39,678.68 × 16,818.02
  4. Step 4: Simplify right side
    28,757.07x = 667,316,975.06
  5. Step 5: Solve for x
    x = 667,316,975.06/28,757.07
  6. Step 6: Final answer
    x = 23,205.32

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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.