Home / 12,774.79-19,148.67-4,872.20

Finding the Fourth Proportional to 12,774.79, 19,148.67 and 4,872.20

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Solution

The fourth proportional to 12,774.79, 19,148.67 and 4,872.20 is: 7,303.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.79 : 19,148.67 = 4,872.20 : x
  2. Step 2: Convert to fraction form
    12,774.79/19,148.67 = 4,872.20/x
  3. Step 3: Cross multiply
    12,774.79x = 19,148.67 × 4,872.20
  4. Step 4: Simplify right side
    12,774.79x = 93,296,149.97
  5. Step 5: Solve for x
    x = 93,296,149.97/12,774.79
  6. Step 6: Final answer
    x = 7,303.15

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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.