Home / 13,283.99-19,921.32-3,921.51

Finding the Fourth Proportional to 13,283.99, 19,921.32 and 3,921.51

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Solution

The fourth proportional to 13,283.99, 19,921.32 and 3,921.51 is: 5,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.99 : 19,921.32 = 3,921.51 : x
  2. Step 2: Convert to fraction form
    13,283.99/19,921.32 = 3,921.51/x
  3. Step 3: Cross multiply
    13,283.99x = 19,921.32 × 3,921.51
  4. Step 4: Simplify right side
    13,283.99x = 78,121,655.59
  5. Step 5: Solve for x
    x = 78,121,655.59/13,283.99
  6. Step 6: Final answer
    x = 5,880.89

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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.