Home / 11,015.28-15,193.23-7,779.90

Finding the Fourth Proportional to 11,015.28, 15,193.23 and 7,779.90

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Solution

The fourth proportional to 11,015.28, 15,193.23 and 7,779.90 is: 10,730.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.28 : 15,193.23 = 7,779.90 : x
  2. Step 2: Convert to fraction form
    11,015.28/15,193.23 = 7,779.90/x
  3. Step 3: Cross multiply
    11,015.28x = 15,193.23 × 7,779.90
  4. Step 4: Simplify right side
    11,015.28x = 118,201,810.08
  5. Step 5: Solve for x
    x = 118,201,810.08/11,015.28
  6. Step 6: Final answer
    x = 10,730.71

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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.