Home / 13,949.75-19,250.30-7,981.07

Finding the Fourth Proportional to 13,949.75, 19,250.30 and 7,981.07

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Solution

The fourth proportional to 13,949.75, 19,250.30 and 7,981.07 is: 11,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.75 : 19,250.30 = 7,981.07 : x
  2. Step 2: Convert to fraction form
    13,949.75/19,250.30 = 7,981.07/x
  3. Step 3: Cross multiply
    13,949.75x = 19,250.30 × 7,981.07
  4. Step 4: Simplify right side
    13,949.75x = 153,637,855.66
  5. Step 5: Solve for x
    x = 153,637,855.66/13,949.75
  6. Step 6: Final answer
    x = 11,013.67

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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.