Home / 12,085.81-18,111.70-9,609.64

Finding the Fourth Proportional to 12,085.81, 18,111.70 and 9,609.64

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Solution

The fourth proportional to 12,085.81, 18,111.70 and 9,609.64 is: 14,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.81 : 18,111.70 = 9,609.64 : x
  2. Step 2: Convert to fraction form
    12,085.81/18,111.70 = 9,609.64/x
  3. Step 3: Cross multiply
    12,085.81x = 18,111.70 × 9,609.64
  4. Step 4: Simplify right side
    12,085.81x = 174,046,883.52
  5. Step 5: Solve for x
    x = 174,046,883.52/12,085.81
  6. Step 6: Final answer
    x = 14,400.93

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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.