Home / 13,323.84-19,988.64-4,090.56

Finding the Fourth Proportional to 13,323.84, 19,988.64 and 4,090.56

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Solution

The fourth proportional to 13,323.84, 19,988.64 and 4,090.56 is: 6,136.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.84 : 19,988.64 = 4,090.56 : x
  2. Step 2: Convert to fraction form
    13,323.84/19,988.64 = 4,090.56/x
  3. Step 3: Cross multiply
    13,323.84x = 19,988.64 × 4,090.56
  4. Step 4: Simplify right side
    13,323.84x = 81,764,731.24
  5. Step 5: Solve for x
    x = 81,764,731.24/13,323.84
  6. Step 6: Final answer
    x = 6,136.72

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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.