Home / 30,846.40-42,575.06-20,072.29

Finding the Fourth Proportional to 30,846.40, 42,575.06 and 20,072.29

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Solution

The fourth proportional to 30,846.40, 42,575.06 and 20,072.29 is: 27,704.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,846.40 : 42,575.06 = 20,072.29 : x
  2. Step 2: Convert to fraction form
    30,846.40/42,575.06 = 20,072.29/x
  3. Step 3: Cross multiply
    30,846.40x = 42,575.06 × 20,072.29
  4. Step 4: Simplify right side
    30,846.40x = 854,578,894.83
  5. Step 5: Solve for x
    x = 854,578,894.83/30,846.40
  6. Step 6: Final answer
    x = 27,704.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.