Home / 19,021.40-28,548.30-8,507.60

Finding the Fourth Proportional to 19,021.40, 28,548.30 and 8,507.60

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Solution

The fourth proportional to 19,021.40, 28,548.30 and 8,507.60 is: 12,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.40 : 28,548.30 = 8,507.60 : x
  2. Step 2: Convert to fraction form
    19,021.40/28,548.30 = 8,507.60/x
  3. Step 3: Cross multiply
    19,021.40x = 28,548.30 × 8,507.60
  4. Step 4: Simplify right side
    19,021.40x = 242,877,517.08
  5. Step 5: Solve for x
    x = 242,877,517.08/19,021.40
  6. Step 6: Final answer
    x = 12,768.65

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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.