Home / 21,312.88-31,974.36-9,626.02

Finding the Fourth Proportional to 21,312.88, 31,974.36 and 9,626.02

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Solution

The fourth proportional to 21,312.88, 31,974.36 and 9,626.02 is: 14,441.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.88 : 31,974.36 = 9,626.02 : x
  2. Step 2: Convert to fraction form
    21,312.88/31,974.36 = 9,626.02/x
  3. Step 3: Cross multiply
    21,312.88x = 31,974.36 × 9,626.02
  4. Step 4: Simplify right side
    21,312.88x = 307,785,828.85
  5. Step 5: Solve for x
    x = 307,785,828.85/21,312.88
  6. Step 6: Final answer
    x = 14,441.31

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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.