Home / 12,711.42-19,071.69-7,723.95

Finding the Fourth Proportional to 12,711.42, 19,071.69 and 7,723.95

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Solution

The fourth proportional to 12,711.42, 19,071.69 and 7,723.95 is: 11,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.42 : 19,071.69 = 7,723.95 : x
  2. Step 2: Convert to fraction form
    12,711.42/19,071.69 = 7,723.95/x
  3. Step 3: Cross multiply
    12,711.42x = 19,071.69 × 7,723.95
  4. Step 4: Simplify right side
    12,711.42x = 147,308,779.98
  5. Step 5: Solve for x
    x = 147,308,779.98/12,711.42
  6. Step 6: Final answer
    x = 11,588.70

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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.