Home / 12,777.75-19,166.63-3,543.75

Finding the Fourth Proportional to 12,777.75, 19,166.63 and 3,543.75

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Solution

The fourth proportional to 12,777.75, 19,166.63 and 3,543.75 is: 5,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.75 : 19,166.63 = 3,543.75 : x
  2. Step 2: Convert to fraction form
    12,777.75/19,166.63 = 3,543.75/x
  3. Step 3: Cross multiply
    12,777.75x = 19,166.63 × 3,543.75
  4. Step 4: Simplify right side
    12,777.75x = 67,921,727.34
  5. Step 5: Solve for x
    x = 67,921,727.34/12,777.75
  6. Step 6: Final answer
    x = 5,315.63

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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.