Home / 28,284.20-42,426.30-16,425.80

Finding the Fourth Proportional to 28,284.20, 42,426.30 and 16,425.80

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Solution

The fourth proportional to 28,284.20, 42,426.30 and 16,425.80 is: 24,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.20 : 42,426.30 = 16,425.80 : x
  2. Step 2: Convert to fraction form
    28,284.20/42,426.30 = 16,425.80/x
  3. Step 3: Cross multiply
    28,284.20x = 42,426.30 × 16,425.80
  4. Step 4: Simplify right side
    28,284.20x = 696,885,918.54
  5. Step 5: Solve for x
    x = 696,885,918.54/28,284.20
  6. Step 6: Final answer
    x = 24,638.70

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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.