Home / 43,353.90-64,986.12-21,139.83

Finding the Fourth Proportional to 43,353.90, 64,986.12 and 21,139.83

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Solution

The fourth proportional to 43,353.90, 64,986.12 and 21,139.83 is: 31,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,353.90 : 64,986.12 = 21,139.83 : x
  2. Step 2: Convert to fraction form
    43,353.90/64,986.12 = 21,139.83/x
  3. Step 3: Cross multiply
    43,353.90x = 64,986.12 × 21,139.83
  4. Step 4: Simplify right side
    43,353.90x = 1,373,795,529.16
  5. Step 5: Solve for x
    x = 1,373,795,529.16/43,353.90
  6. Step 6: Final answer
    x = 31,687.93

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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.