Home / 55,455.58-83,216.34-20,419.84

Finding the Fourth Proportional to 55,455.58, 83,216.34 and 20,419.84

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Solution

The fourth proportional to 55,455.58, 83,216.34 and 20,419.84 is: 30,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,455.58 : 83,216.34 = 20,419.84 : x
  2. Step 2: Convert to fraction form
    55,455.58/83,216.34 = 20,419.84/x
  3. Step 3: Cross multiply
    55,455.58x = 83,216.34 × 20,419.84
  4. Step 4: Simplify right side
    55,455.58x = 1,699,264,348.19
  5. Step 5: Solve for x
    x = 1,699,264,348.19/55,455.58
  6. Step 6: Final answer
    x = 30,641.90

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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.