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Finding the Fourth Proportional to 13,143.65, 19,723.04 and 7,299.77

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Solution

The fourth proportional to 13,143.65, 19,723.04 and 7,299.77 is: 10,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.65 : 19,723.04 = 7,299.77 : x
  2. Step 2: Convert to fraction form
    13,143.65/19,723.04 = 7,299.77/x
  3. Step 3: Cross multiply
    13,143.65x = 19,723.04 × 7,299.77
  4. Step 4: Simplify right side
    13,143.65x = 143,973,655.70
  5. Step 5: Solve for x
    x = 143,973,655.70/13,143.65
  6. Step 6: Final answer
    x = 10,953.86

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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.