Home / 13,859.30-19,125.83-7,485.90

Finding the Fourth Proportional to 13,859.30, 19,125.83 and 7,485.90

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Solution

The fourth proportional to 13,859.30, 19,125.83 and 7,485.90 is: 10,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.30 : 19,125.83 = 7,485.90 : x
  2. Step 2: Convert to fraction form
    13,859.30/19,125.83 = 7,485.90/x
  3. Step 3: Cross multiply
    13,859.30x = 19,125.83 × 7,485.90
  4. Step 4: Simplify right side
    13,859.30x = 143,174,050.80
  5. Step 5: Solve for x
    x = 143,174,050.80/13,859.30
  6. Step 6: Final answer
    x = 10,330.54

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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.