Home / 13,870.98-20,804.85-5,550.66

Finding the Fourth Proportional to 13,870.98, 20,804.85 and 5,550.66

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Solution

The fourth proportional to 13,870.98, 20,804.85 and 5,550.66 is: 8,325.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.98 : 20,804.85 = 5,550.66 : x
  2. Step 2: Convert to fraction form
    13,870.98/20,804.85 = 5,550.66/x
  3. Step 3: Cross multiply
    13,870.98x = 20,804.85 × 5,550.66
  4. Step 4: Simplify right side
    13,870.98x = 115,480,648.70
  5. Step 5: Solve for x
    x = 115,480,648.70/13,870.98
  6. Step 6: Final answer
    x = 8,325.34

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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.