Home / 12,159.36-18,239.76-3,393.72

Finding the Fourth Proportional to 12,159.36, 18,239.76 and 3,393.72

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Solution

The fourth proportional to 12,159.36, 18,239.76 and 3,393.72 is: 5,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.36 : 18,239.76 = 3,393.72 : x
  2. Step 2: Convert to fraction form
    12,159.36/18,239.76 = 3,393.72/x
  3. Step 3: Cross multiply
    12,159.36x = 18,239.76 × 3,393.72
  4. Step 4: Simplify right side
    12,159.36x = 61,900,638.31
  5. Step 5: Solve for x
    x = 61,900,638.31/12,159.36
  6. Step 6: Final answer
    x = 5,090.78

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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.