Home / 28,355.40-42,534.70-8,634.60

Finding the Fourth Proportional to 28,355.40, 42,534.70 and 8,634.60

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Solution

The fourth proportional to 28,355.40, 42,534.70 and 8,634.60 is: 12,952.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.40 : 42,534.70 = 8,634.60 : x
  2. Step 2: Convert to fraction form
    28,355.40/42,534.70 = 8,634.60/x
  3. Step 3: Cross multiply
    28,355.40x = 42,534.70 × 8,634.60
  4. Step 4: Simplify right side
    28,355.40x = 367,270,120.62
  5. Step 5: Solve for x
    x = 367,270,120.62/28,355.40
  6. Step 6: Final answer
    x = 12,952.39

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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.