Home / 13,861.89-19,106.91-10,831.71

Finding the Fourth Proportional to 13,861.89, 19,106.91 and 10,831.71

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Solution

The fourth proportional to 13,861.89, 19,106.91 and 10,831.71 is: 14,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.89 : 19,106.91 = 10,831.71 : x
  2. Step 2: Convert to fraction form
    13,861.89/19,106.91 = 10,831.71/x
  3. Step 3: Cross multiply
    13,861.89x = 19,106.91 × 10,831.71
  4. Step 4: Simplify right side
    13,861.89x = 206,960,508.12
  5. Step 5: Solve for x
    x = 206,960,508.12/13,861.89
  6. Step 6: Final answer
    x = 14,930.18

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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.