Home / 43,849.80-65,785.50-12,688.20

Finding the Fourth Proportional to 43,849.80, 65,785.50 and 12,688.20

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Solution

The fourth proportional to 43,849.80, 65,785.50 and 12,688.20 is: 19,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,849.80 : 65,785.50 = 12,688.20 : x
  2. Step 2: Convert to fraction form
    43,849.80/65,785.50 = 12,688.20/x
  3. Step 3: Cross multiply
    43,849.80x = 65,785.50 × 12,688.20
  4. Step 4: Simplify right side
    43,849.80x = 834,699,581.10
  5. Step 5: Solve for x
    x = 834,699,581.10/43,849.80
  6. Step 6: Final answer
    x = 19,035.43

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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.