Home / 13,869.06-19,139.28-7,900.73

Finding the Fourth Proportional to 13,869.06, 19,139.28 and 7,900.73

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Solution

The fourth proportional to 13,869.06, 19,139.28 and 7,900.73 is: 10,902.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.06 : 19,139.28 = 7,900.73 : x
  2. Step 2: Convert to fraction form
    13,869.06/19,139.28 = 7,900.73/x
  3. Step 3: Cross multiply
    13,869.06x = 19,139.28 × 7,900.73
  4. Step 4: Simplify right side
    13,869.06x = 151,214,283.67
  5. Step 5: Solve for x
    x = 151,214,283.67/13,869.06
  6. Step 6: Final answer
    x = 10,902.99

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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.