Home / 13,723.52-18,931.50-9,186.38

Finding the Fourth Proportional to 13,723.52, 18,931.50 and 9,186.38

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Solution

The fourth proportional to 13,723.52, 18,931.50 and 9,186.38 is: 12,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.52 : 18,931.50 = 9,186.38 : x
  2. Step 2: Convert to fraction form
    13,723.52/18,931.50 = 9,186.38/x
  3. Step 3: Cross multiply
    13,723.52x = 18,931.50 × 9,186.38
  4. Step 4: Simplify right side
    13,723.52x = 173,911,858.31
  5. Step 5: Solve for x
    x = 173,911,858.31/13,723.52
  6. Step 6: Final answer
    x = 12,672.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.