Home / 21,137.40-31,708.26-7,283.16

Finding the Fourth Proportional to 21,137.40, 31,708.26 and 7,283.16

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Solution

The fourth proportional to 21,137.40, 31,708.26 and 7,283.16 is: 10,925.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.40 : 31,708.26 = 7,283.16 : x
  2. Step 2: Convert to fraction form
    21,137.40/31,708.26 = 7,283.16/x
  3. Step 3: Cross multiply
    21,137.40x = 31,708.26 × 7,283.16
  4. Step 4: Simplify right side
    21,137.40x = 230,936,330.90
  5. Step 5: Solve for x
    x = 230,936,330.90/21,137.40
  6. Step 6: Final answer
    x = 10,925.48

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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.