Home / 28,270.63-39,013.61-17,666.38

Finding the Fourth Proportional to 28,270.63, 39,013.61 and 17,666.38

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Solution

The fourth proportional to 28,270.63, 39,013.61 and 17,666.38 is: 24,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.63 : 39,013.61 = 17,666.38 : x
  2. Step 2: Convert to fraction form
    28,270.63/39,013.61 = 17,666.38/x
  3. Step 3: Cross multiply
    28,270.63x = 39,013.61 × 17,666.38
  4. Step 4: Simplify right side
    28,270.63x = 689,229,073.57
  5. Step 5: Solve for x
    x = 689,229,073.57/28,270.63
  6. Step 6: Final answer
    x = 24,379.69

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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.