Home / 21,130.25-31,704.26-9,277.92

Finding the Fourth Proportional to 21,130.25, 31,704.26 and 9,277.92

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Solution

The fourth proportional to 21,130.25, 31,704.26 and 9,277.92 is: 13,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.25 : 31,704.26 = 9,277.92 : x
  2. Step 2: Convert to fraction form
    21,130.25/31,704.26 = 9,277.92/x
  3. Step 3: Cross multiply
    21,130.25x = 31,704.26 × 9,277.92
  4. Step 4: Simplify right side
    21,130.25x = 294,149,541.55
  5. Step 5: Solve for x
    x = 294,149,541.55/21,130.25
  6. Step 6: Final answer
    x = 13,920.78

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1.5x scale

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.