Home / 12,571.09-18,859.07-4,779.30

Finding the Fourth Proportional to 12,571.09, 18,859.07 and 4,779.30

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Solution

The fourth proportional to 12,571.09, 18,859.07 and 4,779.30 is: 7,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.09 : 18,859.07 = 4,779.30 : x
  2. Step 2: Convert to fraction form
    12,571.09/18,859.07 = 4,779.30/x
  3. Step 3: Cross multiply
    12,571.09x = 18,859.07 × 4,779.30
  4. Step 4: Simplify right side
    12,571.09x = 90,133,153.25
  5. Step 5: Solve for x
    x = 90,133,153.25/12,571.09
  6. Step 6: Final answer
    x = 7,169.88

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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.