Home / 21,291.88-31,941.06-6,300.40

Finding the Fourth Proportional to 21,291.88, 31,941.06 and 6,300.40

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Solution

The fourth proportional to 21,291.88, 31,941.06 and 6,300.40 is: 9,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.88 : 31,941.06 = 6,300.40 : x
  2. Step 2: Convert to fraction form
    21,291.88/31,941.06 = 6,300.40/x
  3. Step 3: Cross multiply
    21,291.88x = 31,941.06 × 6,300.40
  4. Step 4: Simplify right side
    21,291.88x = 201,241,454.42
  5. Step 5: Solve for x
    x = 201,241,454.42/21,291.88
  6. Step 6: Final answer
    x = 9,451.56

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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.