Home / 28,828.02-39,782.90-16,080.78

Finding the Fourth Proportional to 28,828.02, 39,782.90 and 16,080.78

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Solution

The fourth proportional to 28,828.02, 39,782.90 and 16,080.78 is: 22,191.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.02 : 39,782.90 = 16,080.78 : x
  2. Step 2: Convert to fraction form
    28,828.02/39,782.90 = 16,080.78/x
  3. Step 3: Cross multiply
    28,828.02x = 39,782.90 × 16,080.78
  4. Step 4: Simplify right side
    28,828.02x = 639,740,062.66
  5. Step 5: Solve for x
    x = 639,740,062.66/28,828.02
  6. Step 6: Final answer
    x = 22,191.61

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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.