Home / 28,740.80-39,662.16-16,165.64

Finding the Fourth Proportional to 28,740.80, 39,662.16 and 16,165.64

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Solution

The fourth proportional to 28,740.80, 39,662.16 and 16,165.64 is: 22,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.80 : 39,662.16 = 16,165.64 : x
  2. Step 2: Convert to fraction form
    28,740.80/39,662.16 = 16,165.64/x
  3. Step 3: Cross multiply
    28,740.80x = 39,662.16 × 16,165.64
  4. Step 4: Simplify right side
    28,740.80x = 641,164,200.18
  5. Step 5: Solve for x
    x = 641,164,200.18/28,740.80
  6. Step 6: Final answer
    x = 22,308.50

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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.