Home / 12,081.32-18,127.20-6,538.57

Finding the Fourth Proportional to 12,081.32, 18,127.20 and 6,538.57

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Solution

The fourth proportional to 12,081.32, 18,127.20 and 6,538.57 is: 9,810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.32 : 18,127.20 = 6,538.57 : x
  2. Step 2: Convert to fraction form
    12,081.32/18,127.20 = 6,538.57/x
  3. Step 3: Cross multiply
    12,081.32x = 18,127.20 × 6,538.57
  4. Step 4: Simplify right side
    12,081.32x = 118,525,966.10
  5. Step 5: Solve for x
    x = 118,525,966.10/12,081.32
  6. Step 6: Final answer
    x = 9,810.68

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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.