Home / 28,826.04-39,780-16,080.42

Finding the Fourth Proportional to 28,826.04, 39,780 and 16,080.42

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Solution

The fourth proportional to 28,826.04, 39,780 and 16,080.42 is: 22,191.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,826.04 : 39,780 = 16,080.42 : x
  2. Step 2: Convert to fraction form
    28,826.04/39,780 = 16,080.42/x
  3. Step 3: Cross multiply
    28,826.04x = 39,780 × 16,080.42
  4. Step 4: Simplify right side
    28,826.04x = 639,679,107.60
  5. Step 5: Solve for x
    x = 639,679,107.60/28,826.04
  6. Step 6: Final answer
    x = 22,191.02

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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.