Home / 21,235.49-31,862.01-10,699.88

Finding the Fourth Proportional to 21,235.49, 31,862.01 and 10,699.88

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Solution

The fourth proportional to 21,235.49, 31,862.01 and 10,699.88 is: 16,054.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.49 : 31,862.01 = 10,699.88 : x
  2. Step 2: Convert to fraction form
    21,235.49/31,862.01 = 10,699.88/x
  3. Step 3: Cross multiply
    21,235.49x = 31,862.01 × 10,699.88
  4. Step 4: Simplify right side
    21,235.49x = 340,919,683.56
  5. Step 5: Solve for x
    x = 340,919,683.56/21,235.49
  6. Step 6: Final answer
    x = 16,054.24

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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.