Home / 13,723.81-18,929.12-11,618.82

Finding the Fourth Proportional to 13,723.81, 18,929.12 and 11,618.82

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Solution

The fourth proportional to 13,723.81, 18,929.12 and 11,618.82 is: 16,025.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.81 : 18,929.12 = 11,618.82 : x
  2. Step 2: Convert to fraction form
    13,723.81/18,929.12 = 11,618.82/x
  3. Step 3: Cross multiply
    13,723.81x = 18,929.12 × 11,618.82
  4. Step 4: Simplify right side
    13,723.81x = 219,934,038.04
  5. Step 5: Solve for x
    x = 219,934,038.04/13,723.81
  6. Step 6: Final answer
    x = 16,025.73

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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.