Home / 12,416.80-18,596.40-7,751.20

Finding the Fourth Proportional to 12,416.80, 18,596.40 and 7,751.20

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Solution

The fourth proportional to 12,416.80, 18,596.40 and 7,751.20 is: 11,608.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.80 : 18,596.40 = 7,751.20 : x
  2. Step 2: Convert to fraction form
    12,416.80/18,596.40 = 7,751.20/x
  3. Step 3: Cross multiply
    12,416.80x = 18,596.40 × 7,751.20
  4. Step 4: Simplify right side
    12,416.80x = 144,144,415.68
  5. Step 5: Solve for x
    x = 144,144,415.68/12,416.80
  6. Step 6: Final answer
    x = 11,608.82

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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.