Home / 12,878.64-19,306.80-4,986.66

Finding the Fourth Proportional to 12,878.64, 19,306.80 and 4,986.66

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Solution

The fourth proportional to 12,878.64, 19,306.80 and 4,986.66 is: 7,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.64 : 19,306.80 = 4,986.66 : x
  2. Step 2: Convert to fraction form
    12,878.64/19,306.80 = 4,986.66/x
  3. Step 3: Cross multiply
    12,878.64x = 19,306.80 × 4,986.66
  4. Step 4: Simplify right side
    12,878.64x = 96,276,447.29
  5. Step 5: Solve for x
    x = 96,276,447.29/12,878.64
  6. Step 6: Final answer
    x = 7,475.67

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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.