Home / 12,677.44-19,018.84-4,779.79

Finding the Fourth Proportional to 12,677.44, 19,018.84 and 4,779.79

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Solution

The fourth proportional to 12,677.44, 19,018.84 and 4,779.79 is: 7,170.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.44 : 19,018.84 = 4,779.79 : x
  2. Step 2: Convert to fraction form
    12,677.44/19,018.84 = 4,779.79/x
  3. Step 3: Cross multiply
    12,677.44x = 19,018.84 × 4,779.79
  4. Step 4: Simplify right side
    12,677.44x = 90,906,061.24
  5. Step 5: Solve for x
    x = 90,906,061.24/12,677.44
  6. Step 6: Final answer
    x = 7,170.70

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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.