Home / 13,859.18-19,125.61-7,571.55

Finding the Fourth Proportional to 13,859.18, 19,125.61 and 7,571.55

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Solution

The fourth proportional to 13,859.18, 19,125.61 and 7,571.55 is: 10,448.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.18 : 19,125.61 = 7,571.55 : x
  2. Step 2: Convert to fraction form
    13,859.18/19,125.61 = 7,571.55/x
  3. Step 3: Cross multiply
    13,859.18x = 19,125.61 × 7,571.55
  4. Step 4: Simplify right side
    13,859.18x = 144,810,512.40
  5. Step 5: Solve for x
    x = 144,810,512.40/13,859.18
  6. Step 6: Final answer
    x = 10,448.71

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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.