Home / 21,303.96-31,956.21-11,942.52

Finding the Fourth Proportional to 21,303.96, 31,956.21 and 11,942.52

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Solution

The fourth proportional to 21,303.96, 31,956.21 and 11,942.52 is: 17,913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.96 : 31,956.21 = 11,942.52 : x
  2. Step 2: Convert to fraction form
    21,303.96/31,956.21 = 11,942.52/x
  3. Step 3: Cross multiply
    21,303.96x = 31,956.21 × 11,942.52
  4. Step 4: Simplify right side
    21,303.96x = 381,637,677.05
  5. Step 5: Solve for x
    x = 381,637,677.05/21,303.96
  6. Step 6: Final answer
    x = 17,913.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.