Home / 13,318.48-19,940.72-8,643.92

Finding the Fourth Proportional to 13,318.48, 19,940.72 and 8,643.92

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Solution

The fourth proportional to 13,318.48, 19,940.72 and 8,643.92 is: 12,941.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.48 : 19,940.72 = 8,643.92 : x
  2. Step 2: Convert to fraction form
    13,318.48/19,940.72 = 8,643.92/x
  3. Step 3: Cross multiply
    13,318.48x = 19,940.72 × 8,643.92
  4. Step 4: Simplify right side
    13,318.48x = 172,365,988.42
  5. Step 5: Solve for x
    x = 172,365,988.42/13,318.48
  6. Step 6: Final answer
    x = 12,941.87

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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.