Home / 12,348.36-18,518.22-7,661.16

Finding the Fourth Proportional to 12,348.36, 18,518.22 and 7,661.16

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Solution

The fourth proportional to 12,348.36, 18,518.22 and 7,661.16 is: 11,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.36 : 18,518.22 = 7,661.16 : x
  2. Step 2: Convert to fraction form
    12,348.36/18,518.22 = 7,661.16/x
  3. Step 3: Cross multiply
    12,348.36x = 18,518.22 × 7,661.16
  4. Step 4: Simplify right side
    12,348.36x = 141,871,046.34
  5. Step 5: Solve for x
    x = 141,871,046.34/12,348.36
  6. Step 6: Final answer
    x = 11,489.06

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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.