Home / 21,277.38-31,930.64-7,426.38

Finding the Fourth Proportional to 21,277.38, 31,930.64 and 7,426.38

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Solution

The fourth proportional to 21,277.38, 31,930.64 and 7,426.38 is: 11,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.38 : 31,930.64 = 7,426.38 : x
  2. Step 2: Convert to fraction form
    21,277.38/31,930.64 = 7,426.38/x
  3. Step 3: Cross multiply
    21,277.38x = 31,930.64 × 7,426.38
  4. Step 4: Simplify right side
    21,277.38x = 237,129,066.28
  5. Step 5: Solve for x
    x = 237,129,066.28/21,277.38
  6. Step 6: Final answer
    x = 11,144.66

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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.