Home / 12,111.24-18,137.70-6,901.32

Finding the Fourth Proportional to 12,111.24, 18,137.70 and 6,901.32

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Solution

The fourth proportional to 12,111.24, 18,137.70 and 6,901.32 is: 10,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.24 : 18,137.70 = 6,901.32 : x
  2. Step 2: Convert to fraction form
    12,111.24/18,137.70 = 6,901.32/x
  3. Step 3: Cross multiply
    12,111.24x = 18,137.70 × 6,901.32
  4. Step 4: Simplify right side
    12,111.24x = 125,174,071.76
  5. Step 5: Solve for x
    x = 125,174,071.76/12,111.24
  6. Step 6: Final answer
    x = 10,335.36

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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.