Home / 13,921.89-19,211.46-7,952.76

Finding the Fourth Proportional to 13,921.89, 19,211.46 and 7,952.76

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Solution

The fourth proportional to 13,921.89, 19,211.46 and 7,952.76 is: 10,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.89 : 19,211.46 = 7,952.76 : x
  2. Step 2: Convert to fraction form
    13,921.89/19,211.46 = 7,952.76/x
  3. Step 3: Cross multiply
    13,921.89x = 19,211.46 × 7,952.76
  4. Step 4: Simplify right side
    13,921.89x = 152,784,130.63
  5. Step 5: Solve for x
    x = 152,784,130.63/13,921.89
  6. Step 6: Final answer
    x = 10,974.38

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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.