Home / 21,123.09-31,682.21-5,541.93

Finding the Fourth Proportional to 21,123.09, 31,682.21 and 5,541.93

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Solution

The fourth proportional to 21,123.09, 31,682.21 and 5,541.93 is: 8,312.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.09 : 31,682.21 = 5,541.93 : x
  2. Step 2: Convert to fraction form
    21,123.09/31,682.21 = 5,541.93/x
  3. Step 3: Cross multiply
    21,123.09x = 31,682.21 × 5,541.93
  4. Step 4: Simplify right side
    21,123.09x = 175,580,562.36
  5. Step 5: Solve for x
    x = 175,580,562.36/21,123.09
  6. Step 6: Final answer
    x = 8,312.26

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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.