Home / 12,820.59-19,217.75-4,920.98

Finding the Fourth Proportional to 12,820.59, 19,217.75 and 4,920.98

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Solution

The fourth proportional to 12,820.59, 19,217.75 and 4,920.98 is: 7,376.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.59 : 19,217.75 = 4,920.98 : x
  2. Step 2: Convert to fraction form
    12,820.59/19,217.75 = 4,920.98/x
  3. Step 3: Cross multiply
    12,820.59x = 19,217.75 × 4,920.98
  4. Step 4: Simplify right side
    12,820.59x = 94,570,042.70
  5. Step 5: Solve for x
    x = 94,570,042.70/12,820.59
  6. Step 6: Final answer
    x = 7,376.42

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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.