Home / 21,004.44-31,509.54-9,317.40

Finding the Fourth Proportional to 21,004.44, 31,509.54 and 9,317.40

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Solution

The fourth proportional to 21,004.44, 31,509.54 and 9,317.40 is: 13,977.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.44 : 31,509.54 = 9,317.40 : x
  2. Step 2: Convert to fraction form
    21,004.44/31,509.54 = 9,317.40/x
  3. Step 3: Cross multiply
    21,004.44x = 31,509.54 × 9,317.40
  4. Step 4: Simplify right side
    21,004.44x = 293,586,988.00
  5. Step 5: Solve for x
    x = 293,586,988.00/21,004.44
  6. Step 6: Final answer
    x = 13,977.38

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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.