Home / 28,774.36-43,069.20-15,428.80

Finding the Fourth Proportional to 28,774.36, 43,069.20 and 15,428.80

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Solution

The fourth proportional to 28,774.36, 43,069.20 and 15,428.80 is: 23,093.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,774.36 : 43,069.20 = 15,428.80 : x
  2. Step 2: Convert to fraction form
    28,774.36/43,069.20 = 15,428.80/x
  3. Step 3: Cross multiply
    28,774.36x = 43,069.20 × 15,428.80
  4. Step 4: Simplify right side
    28,774.36x = 664,506,072.96
  5. Step 5: Solve for x
    x = 664,506,072.96/28,774.36
  6. Step 6: Final answer
    x = 23,093.69

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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.