Home / 21,055.14-31,618.36-14,079.98

Finding the Fourth Proportional to 21,055.14, 31,618.36 and 14,079.98

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Solution

The fourth proportional to 21,055.14, 31,618.36 and 14,079.98 is: 21,143.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.14 : 31,618.36 = 14,079.98 : x
  2. Step 2: Convert to fraction form
    21,055.14/31,618.36 = 14,079.98/x
  3. Step 3: Cross multiply
    21,055.14x = 31,618.36 × 14,079.98
  4. Step 4: Simplify right side
    21,055.14x = 445,185,876.43
  5. Step 5: Solve for x
    x = 445,185,876.43/21,055.14
  6. Step 6: Final answer
    x = 21,143.81

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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.