Home / 20,510.06-28,303.90-11,078.63

Finding the Fourth Proportional to 20,510.06, 28,303.90 and 11,078.63

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Solution

The fourth proportional to 20,510.06, 28,303.90 and 11,078.63 is: 15,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.06 : 28,303.90 = 11,078.63 : x
  2. Step 2: Convert to fraction form
    20,510.06/28,303.90 = 11,078.63/x
  3. Step 3: Cross multiply
    20,510.06x = 28,303.90 × 11,078.63
  4. Step 4: Simplify right side
    20,510.06x = 313,568,435.66
  5. Step 5: Solve for x
    x = 313,568,435.66/20,510.06
  6. Step 6: Final answer
    x = 15,288.52

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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.