Home / 28,536.17-39,379.97-15,790.28

Finding the Fourth Proportional to 28,536.17, 39,379.97 and 15,790.28

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Solution

The fourth proportional to 28,536.17, 39,379.97 and 15,790.28 is: 21,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.17 : 39,379.97 = 15,790.28 : x
  2. Step 2: Convert to fraction form
    28,536.17/39,379.97 = 15,790.28/x
  3. Step 3: Cross multiply
    28,536.17x = 39,379.97 × 15,790.28
  4. Step 4: Simplify right side
    28,536.17x = 621,820,595.27
  5. Step 5: Solve for x
    x = 621,820,595.27/28,536.17
  6. Step 6: Final answer
    x = 21,790.62

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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.