Home / 28,365.40-42,549.70-8,644.60

Finding the Fourth Proportional to 28,365.40, 42,549.70 and 8,644.60

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Solution

The fourth proportional to 28,365.40, 42,549.70 and 8,644.60 is: 12,967.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.40 : 42,549.70 = 8,644.60 : x
  2. Step 2: Convert to fraction form
    28,365.40/42,549.70 = 8,644.60/x
  3. Step 3: Cross multiply
    28,365.40x = 42,549.70 × 8,644.60
  4. Step 4: Simplify right side
    28,365.40x = 367,825,136.62
  5. Step 5: Solve for x
    x = 367,825,136.62/28,365.40
  6. Step 6: Final answer
    x = 12,967.39

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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.