Home / 28,003.41-42,011.64-12,422.25

Finding the Fourth Proportional to 28,003.41, 42,011.64 and 12,422.25

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Solution

The fourth proportional to 28,003.41, 42,011.64 and 12,422.25 is: 18,636.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.41 : 42,011.64 = 12,422.25 : x
  2. Step 2: Convert to fraction form
    28,003.41/42,011.64 = 12,422.25/x
  3. Step 3: Cross multiply
    28,003.41x = 42,011.64 × 12,422.25
  4. Step 4: Simplify right side
    28,003.41x = 521,879,094.99
  5. Step 5: Solve for x
    x = 521,879,094.99/28,003.41
  6. Step 6: Final answer
    x = 18,636.27

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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.