Home / 12,137.07-18,182.29-7,443.40

Finding the Fourth Proportional to 12,137.07, 18,182.29 and 7,443.40

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Solution

The fourth proportional to 12,137.07, 18,182.29 and 7,443.40 is: 11,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.07 : 18,182.29 = 7,443.40 : x
  2. Step 2: Convert to fraction form
    12,137.07/18,182.29 = 7,443.40/x
  3. Step 3: Cross multiply
    12,137.07x = 18,182.29 × 7,443.40
  4. Step 4: Simplify right side
    12,137.07x = 135,338,041.37
  5. Step 5: Solve for x
    x = 135,338,041.37/12,137.07
  6. Step 6: Final answer
    x = 11,150.80

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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.