Home / 21,956.24-30,303.44-13,008.78

Finding the Fourth Proportional to 21,956.24, 30,303.44 and 13,008.78

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Solution

The fourth proportional to 21,956.24, 30,303.44 and 13,008.78 is: 17,954.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.24 : 30,303.44 = 13,008.78 : x
  2. Step 2: Convert to fraction form
    21,956.24/30,303.44 = 13,008.78/x
  3. Step 3: Cross multiply
    21,956.24x = 30,303.44 × 13,008.78
  4. Step 4: Simplify right side
    21,956.24x = 394,210,784.20
  5. Step 5: Solve for x
    x = 394,210,784.20/21,956.24
  6. Step 6: Final answer
    x = 17,954.38

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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.