Home / 21,956.70-30,270.14-13,886.34

Finding the Fourth Proportional to 21,956.70, 30,270.14 and 13,886.34

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Solution

The fourth proportional to 21,956.70, 30,270.14 and 13,886.34 is: 19,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.70 : 30,270.14 = 13,886.34 : x
  2. Step 2: Convert to fraction form
    21,956.70/30,270.14 = 13,886.34/x
  3. Step 3: Cross multiply
    21,956.70x = 30,270.14 × 13,886.34
  4. Step 4: Simplify right side
    21,956.70x = 420,341,325.02
  5. Step 5: Solve for x
    x = 420,341,325.02/21,956.70
  6. Step 6: Final answer
    x = 19,144.10

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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.