Home / 55,457.58-83,219.31-20,421.84

Finding the Fourth Proportional to 55,457.58, 83,219.31 and 20,421.84

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Solution

The fourth proportional to 55,457.58, 83,219.31 and 20,421.84 is: 30,644.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,457.58 : 83,219.31 = 20,421.84 : x
  2. Step 2: Convert to fraction form
    55,457.58/83,219.31 = 20,421.84/x
  3. Step 3: Cross multiply
    55,457.58x = 83,219.31 × 20,421.84
  4. Step 4: Simplify right side
    55,457.58x = 1,699,491,433.73
  5. Step 5: Solve for x
    x = 1,699,491,433.73/55,457.58
  6. Step 6: Final answer
    x = 30,644.89

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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.