Home / 11,116.04-16,640.80-6,720.20

Finding the Fourth Proportional to 11,116.04, 16,640.80 and 6,720.20

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Solution

The fourth proportional to 11,116.04, 16,640.80 and 6,720.20 is: 10,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.04 : 16,640.80 = 6,720.20 : x
  2. Step 2: Convert to fraction form
    11,116.04/16,640.80 = 6,720.20/x
  3. Step 3: Cross multiply
    11,116.04x = 16,640.80 × 6,720.20
  4. Step 4: Simplify right side
    11,116.04x = 111,829,504.16
  5. Step 5: Solve for x
    x = 111,829,504.16/11,116.04
  6. Step 6: Final answer
    x = 10,060.19

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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.