Home / 43,875.72-65,813.58-20,518.56

Finding the Fourth Proportional to 43,875.72, 65,813.58 and 20,518.56

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Solution

The fourth proportional to 43,875.72, 65,813.58 and 20,518.56 is: 30,777.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,875.72 : 65,813.58 = 20,518.56 : x
  2. Step 2: Convert to fraction form
    43,875.72/65,813.58 = 20,518.56/x
  3. Step 3: Cross multiply
    43,875.72x = 65,813.58 × 20,518.56
  4. Step 4: Simplify right side
    43,875.72x = 1,350,399,890.04
  5. Step 5: Solve for x
    x = 1,350,399,890.04/43,875.72
  6. Step 6: Final answer
    x = 30,777.84

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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.