Home / 20,431.52-30,647.04-7,284.32

Finding the Fourth Proportional to 20,431.52, 30,647.04 and 7,284.32

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Solution

The fourth proportional to 20,431.52, 30,647.04 and 7,284.32 is: 10,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.52 : 30,647.04 = 7,284.32 : x
  2. Step 2: Convert to fraction form
    20,431.52/30,647.04 = 7,284.32/x
  3. Step 3: Cross multiply
    20,431.52x = 30,647.04 × 7,284.32
  4. Step 4: Simplify right side
    20,431.52x = 223,242,846.41
  5. Step 5: Solve for x
    x = 223,242,846.41/20,431.52
  6. Step 6: Final answer
    x = 10,926.39

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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.