Home / 13,750.96-20,629.80-4,390.98

Finding the Fourth Proportional to 13,750.96, 20,629.80 and 4,390.98

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Solution

The fourth proportional to 13,750.96, 20,629.80 and 4,390.98 is: 6,587.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.96 : 20,629.80 = 4,390.98 : x
  2. Step 2: Convert to fraction form
    13,750.96/20,629.80 = 4,390.98/x
  3. Step 3: Cross multiply
    13,750.96x = 20,629.80 × 4,390.98
  4. Step 4: Simplify right side
    13,750.96x = 90,585,039.20
  5. Step 5: Solve for x
    x = 90,585,039.20/13,750.96
  6. Step 6: Final answer
    x = 6,587.54

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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.