Home / 13,883.40-20,830.77-7,315.38

Finding the Fourth Proportional to 13,883.40, 20,830.77 and 7,315.38

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Solution

The fourth proportional to 13,883.40, 20,830.77 and 7,315.38 is: 10,976.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.40 : 20,830.77 = 7,315.38 : x
  2. Step 2: Convert to fraction form
    13,883.40/20,830.77 = 7,315.38/x
  3. Step 3: Cross multiply
    13,883.40x = 20,830.77 × 7,315.38
  4. Step 4: Simplify right side
    13,883.40x = 152,384,998.24
  5. Step 5: Solve for x
    x = 152,384,998.24/13,883.40
  6. Step 6: Final answer
    x = 10,976.06

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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.