Home / 28,615.80-42,923.70-19,284.60

Finding the Fourth Proportional to 28,615.80, 42,923.70 and 19,284.60

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Solution

The fourth proportional to 28,615.80, 42,923.70 and 19,284.60 is: 28,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.80 : 42,923.70 = 19,284.60 : x
  2. Step 2: Convert to fraction form
    28,615.80/42,923.70 = 19,284.60/x
  3. Step 3: Cross multiply
    28,615.80x = 42,923.70 × 19,284.60
  4. Step 4: Simplify right side
    28,615.80x = 827,766,385.02
  5. Step 5: Solve for x
    x = 827,766,385.02/28,615.80
  6. Step 6: Final answer
    x = 28,926.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.