Home / 21,312.19-31,945.99-7,267.30

Finding the Fourth Proportional to 21,312.19, 31,945.99 and 7,267.30

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Solution

The fourth proportional to 21,312.19, 31,945.99 and 7,267.30 is: 10,893.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.19 : 31,945.99 = 7,267.30 : x
  2. Step 2: Convert to fraction form
    21,312.19/31,945.99 = 7,267.30/x
  3. Step 3: Cross multiply
    21,312.19x = 31,945.99 × 7,267.30
  4. Step 4: Simplify right side
    21,312.19x = 232,160,933.40
  5. Step 5: Solve for x
    x = 232,160,933.40/21,312.19
  6. Step 6: Final answer
    x = 10,893.34

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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.