Home / 12,571.25-18,859.30-4,779.46

Finding the Fourth Proportional to 12,571.25, 18,859.30 and 4,779.46

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Solution

The fourth proportional to 12,571.25, 18,859.30 and 4,779.46 is: 7,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.25 : 18,859.30 = 4,779.46 : x
  2. Step 2: Convert to fraction form
    12,571.25/18,859.30 = 4,779.46/x
  3. Step 3: Cross multiply
    12,571.25x = 18,859.30 × 4,779.46
  4. Step 4: Simplify right side
    12,571.25x = 90,137,187.63
  5. Step 5: Solve for x
    x = 90,137,187.63/12,571.25
  6. Step 6: Final answer
    x = 7,170.11

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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.