Home / 15,190.98-22,772.40-7,779.12

Finding the Fourth Proportional to 15,190.98, 22,772.40 and 7,779.12

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Solution

The fourth proportional to 15,190.98, 22,772.40 and 7,779.12 is: 11,661.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.98 : 22,772.40 = 7,779.12 : x
  2. Step 2: Convert to fraction form
    15,190.98/22,772.40 = 7,779.12/x
  3. Step 3: Cross multiply
    15,190.98x = 22,772.40 × 7,779.12
  4. Step 4: Simplify right side
    15,190.98x = 177,149,232.29
  5. Step 5: Solve for x
    x = 177,149,232.29/15,190.98
  6. Step 6: Final answer
    x = 11,661.47

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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.