Home / 13,790.56-20,685.48-4,430.56

Finding the Fourth Proportional to 13,790.56, 20,685.48 and 4,430.56

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Solution

The fourth proportional to 13,790.56, 20,685.48 and 4,430.56 is: 6,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.56 : 20,685.48 = 4,430.56 : x
  2. Step 2: Convert to fraction form
    13,790.56/20,685.48 = 4,430.56/x
  3. Step 3: Cross multiply
    13,790.56x = 20,685.48 × 4,430.56
  4. Step 4: Simplify right side
    13,790.56x = 91,648,260.27
  5. Step 5: Solve for x
    x = 91,648,260.27/13,790.56
  6. Step 6: Final answer
    x = 6,645.72

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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.