Home / 21,043.90-31,564.60-7,895.17

Finding the Fourth Proportional to 21,043.90, 31,564.60 and 7,895.17

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Solution

The fourth proportional to 21,043.90, 31,564.60 and 7,895.17 is: 11,842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.90 : 31,564.60 = 7,895.17 : x
  2. Step 2: Convert to fraction form
    21,043.90/31,564.60 = 7,895.17/x
  3. Step 3: Cross multiply
    21,043.90x = 31,564.60 × 7,895.17
  4. Step 4: Simplify right side
    21,043.90x = 249,207,882.98
  5. Step 5: Solve for x
    x = 249,207,882.98/21,043.90
  6. Step 6: Final answer
    x = 11,842.29

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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.