Home / 19,777.12-29,664.60-4,986.04

Finding the Fourth Proportional to 19,777.12, 29,664.60 and 4,986.04

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Solution

The fourth proportional to 19,777.12, 29,664.60 and 4,986.04 is: 7,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.12 : 29,664.60 = 4,986.04 : x
  2. Step 2: Convert to fraction form
    19,777.12/29,664.60 = 4,986.04/x
  3. Step 3: Cross multiply
    19,777.12x = 29,664.60 × 4,986.04
  4. Step 4: Simplify right side
    19,777.12x = 147,908,882.18
  5. Step 5: Solve for x
    x = 147,908,882.18/19,777.12
  6. Step 6: Final answer
    x = 7,478.79

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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.