Home / 12,068.80-18,111.30-7,133.20

Finding the Fourth Proportional to 12,068.80, 18,111.30 and 7,133.20

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Solution

The fourth proportional to 12,068.80, 18,111.30 and 7,133.20 is: 10,704.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,068.80 : 18,111.30 = 7,133.20 : x
  2. Step 2: Convert to fraction form
    12,068.80/18,111.30 = 7,133.20/x
  3. Step 3: Cross multiply
    12,068.80x = 18,111.30 × 7,133.20
  4. Step 4: Simplify right side
    12,068.80x = 129,191,525.16
  5. Step 5: Solve for x
    x = 129,191,525.16/12,068.80
  6. Step 6: Final answer
    x = 10,704.59

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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.