Home / 12,777.70-19,161.76-4,455.58

Finding the Fourth Proportional to 12,777.70, 19,161.76 and 4,455.58

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Solution

The fourth proportional to 12,777.70, 19,161.76 and 4,455.58 is: 6,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.70 : 19,161.76 = 4,455.58 : x
  2. Step 2: Convert to fraction form
    12,777.70/19,161.76 = 4,455.58/x
  3. Step 3: Cross multiply
    12,777.70x = 19,161.76 × 4,455.58
  4. Step 4: Simplify right side
    12,777.70x = 85,376,754.62
  5. Step 5: Solve for x
    x = 85,376,754.62/12,777.70
  6. Step 6: Final answer
    x = 6,681.70

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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.