Home / 12,030.31-18,040.84-4,131.36

Finding the Fourth Proportional to 12,030.31, 18,040.84 and 4,131.36

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Solution

The fourth proportional to 12,030.31, 18,040.84 and 4,131.36 is: 6,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,030.31 : 18,040.84 = 4,131.36 : x
  2. Step 2: Convert to fraction form
    12,030.31/18,040.84 = 4,131.36/x
  3. Step 3: Cross multiply
    12,030.31x = 18,040.84 × 4,131.36
  4. Step 4: Simplify right side
    12,030.31x = 74,533,204.74
  5. Step 5: Solve for x
    x = 74,533,204.74/12,030.31
  6. Step 6: Final answer
    x = 6,195.45

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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.