Home / 19,120.54-28,672.71-7,425.76

Finding the Fourth Proportional to 19,120.54, 28,672.71 and 7,425.76

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Solution

The fourth proportional to 19,120.54, 28,672.71 and 7,425.76 is: 11,135.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.54 : 28,672.71 = 7,425.76 : x
  2. Step 2: Convert to fraction form
    19,120.54/28,672.71 = 7,425.76/x
  3. Step 3: Cross multiply
    19,120.54x = 28,672.71 × 7,425.76
  4. Step 4: Simplify right side
    19,120.54x = 212,916,663.01
  5. Step 5: Solve for x
    x = 212,916,663.01/19,120.54
  6. Step 6: Final answer
    x = 11,135.49

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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.