Home / 13,639.83-20,457.45-4,405.83

Finding the Fourth Proportional to 13,639.83, 20,457.45 and 4,405.83

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Solution

The fourth proportional to 13,639.83, 20,457.45 and 4,405.83 is: 6,608.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.83 : 20,457.45 = 4,405.83 : x
  2. Step 2: Convert to fraction form
    13,639.83/20,457.45 = 4,405.83/x
  3. Step 3: Cross multiply
    13,639.83x = 20,457.45 × 4,405.83
  4. Step 4: Simplify right side
    13,639.83x = 90,132,046.93
  5. Step 5: Solve for x
    x = 90,132,046.93/13,639.83
  6. Step 6: Final answer
    x = 6,608.00

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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.