Home / 27,956.70-38,579.40-15,381.42

Finding the Fourth Proportional to 27,956.70, 38,579.40 and 15,381.42

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Solution

The fourth proportional to 27,956.70, 38,579.40 and 15,381.42 is: 21,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,956.70 : 38,579.40 = 15,381.42 : x
  2. Step 2: Convert to fraction form
    27,956.70/38,579.40 = 15,381.42/x
  3. Step 3: Cross multiply
    27,956.70x = 38,579.40 × 15,381.42
  4. Step 4: Simplify right side
    27,956.70x = 593,405,954.75
  5. Step 5: Solve for x
    x = 593,405,954.75/27,956.70
  6. Step 6: Final answer
    x = 21,225.89

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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.