Home / 11,022.90-15,205.20-7,039.56

Finding the Fourth Proportional to 11,022.90, 15,205.20 and 7,039.56

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Solution

The fourth proportional to 11,022.90, 15,205.20 and 7,039.56 is: 9,710.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,022.90 : 15,205.20 = 7,039.56 : x
  2. Step 2: Convert to fraction form
    11,022.90/15,205.20 = 7,039.56/x
  3. Step 3: Cross multiply
    11,022.90x = 15,205.20 × 7,039.56
  4. Step 4: Simplify right side
    11,022.90x = 107,037,917.71
  5. Step 5: Solve for x
    x = 107,037,917.71/11,022.90
  6. Step 6: Final answer
    x = 9,710.50

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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.