Home / 21,236.94-31,840.24-9,985.98

Finding the Fourth Proportional to 21,236.94, 31,840.24 and 9,985.98

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Solution

The fourth proportional to 21,236.94, 31,840.24 and 9,985.98 is: 14,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.94 : 31,840.24 = 9,985.98 : x
  2. Step 2: Convert to fraction form
    21,236.94/31,840.24 = 9,985.98/x
  3. Step 3: Cross multiply
    21,236.94x = 31,840.24 × 9,985.98
  4. Step 4: Simplify right side
    21,236.94x = 317,955,999.84
  5. Step 5: Solve for x
    x = 317,955,999.84/21,236.94
  6. Step 6: Final answer
    x = 14,971.84

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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.