Home / 12,742.73-19,135.69-8,307.98

Finding the Fourth Proportional to 12,742.73, 19,135.69 and 8,307.98

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Solution

The fourth proportional to 12,742.73, 19,135.69 and 8,307.98 is: 12,476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.73 : 19,135.69 = 8,307.98 : x
  2. Step 2: Convert to fraction form
    12,742.73/19,135.69 = 8,307.98/x
  3. Step 3: Cross multiply
    12,742.73x = 19,135.69 × 8,307.98
  4. Step 4: Simplify right side
    12,742.73x = 158,979,039.49
  5. Step 5: Solve for x
    x = 158,979,039.49/12,742.73
  6. Step 6: Final answer
    x = 12,476.05

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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.