Home / 28,406.58-42,619.32-12,609.42

Finding the Fourth Proportional to 28,406.58, 42,619.32 and 12,609.42

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Solution

The fourth proportional to 28,406.58, 42,619.32 and 12,609.42 is: 18,918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.58 : 42,619.32 = 12,609.42 : x
  2. Step 2: Convert to fraction form
    28,406.58/42,619.32 = 12,609.42/x
  3. Step 3: Cross multiply
    28,406.58x = 42,619.32 × 12,609.42
  4. Step 4: Simplify right side
    28,406.58x = 537,404,905.99
  5. Step 5: Solve for x
    x = 537,404,905.99/28,406.58
  6. Step 6: Final answer
    x = 18,918.32

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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.