Home / 13,320.02-19,980.03-3,960

Finding the Fourth Proportional to 13,320.02, 19,980.03 and 3,960

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Solution

The fourth proportional to 13,320.02, 19,980.03 and 3,960 is: 5,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.02 : 19,980.03 = 3,960 : x
  2. Step 2: Convert to fraction form
    13,320.02/19,980.03 = 3,960/x
  3. Step 3: Cross multiply
    13,320.02x = 19,980.03 × 3,960
  4. Step 4: Simplify right side
    13,320.02x = 79,120,918.80
  5. Step 5: Solve for x
    x = 79,120,918.80/13,320.02
  6. Step 6: Final answer
    x = 5,940.00

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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.