Home / 20,964.51-31,457.70-19,754.37

Finding the Fourth Proportional to 20,964.51, 31,457.70 and 19,754.37

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Solution

The fourth proportional to 20,964.51, 31,457.70 and 19,754.37 is: 29,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.51 : 31,457.70 = 19,754.37 : x
  2. Step 2: Convert to fraction form
    20,964.51/31,457.70 = 19,754.37/x
  3. Step 3: Cross multiply
    20,964.51x = 31,457.70 × 19,754.37
  4. Step 4: Simplify right side
    20,964.51x = 621,427,045.15
  5. Step 5: Solve for x
    x = 621,427,045.15/20,964.51
  6. Step 6: Final answer
    x = 29,641.86

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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.