Home / 28,790.16-39,733.92-16,215.72

Finding the Fourth Proportional to 28,790.16, 39,733.92 and 16,215.72

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Solution

The fourth proportional to 28,790.16, 39,733.92 and 16,215.72 is: 22,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790.16 : 39,733.92 = 16,215.72 : x
  2. Step 2: Convert to fraction form
    28,790.16/39,733.92 = 16,215.72/x
  3. Step 3: Cross multiply
    28,790.16x = 39,733.92 × 16,215.72
  4. Step 4: Simplify right side
    28,790.16x = 644,314,121.22
  5. Step 5: Solve for x
    x = 644,314,121.22/28,790.16
  6. Step 6: Final answer
    x = 22,379.66

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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.