Home / 13,860.57-19,133.88-8,831.69

Finding the Fourth Proportional to 13,860.57, 19,133.88 and 8,831.69

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Solution

The fourth proportional to 13,860.57, 19,133.88 and 8,831.69 is: 12,191.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.57 : 19,133.88 = 8,831.69 : x
  2. Step 2: Convert to fraction form
    13,860.57/19,133.88 = 8,831.69/x
  3. Step 3: Cross multiply
    13,860.57x = 19,133.88 × 8,831.69
  4. Step 4: Simplify right side
    13,860.57x = 168,984,496.66
  5. Step 5: Solve for x
    x = 168,984,496.66/13,860.57
  6. Step 6: Final answer
    x = 12,191.74

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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.