Home / 28,621.76-42,935.18-7,561.49

Finding the Fourth Proportional to 28,621.76, 42,935.18 and 7,561.49

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Solution

The fourth proportional to 28,621.76, 42,935.18 and 7,561.49 is: 11,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.76 : 42,935.18 = 7,561.49 : x
  2. Step 2: Convert to fraction form
    28,621.76/42,935.18 = 7,561.49/x
  3. Step 3: Cross multiply
    28,621.76x = 42,935.18 × 7,561.49
  4. Step 4: Simplify right side
    28,621.76x = 324,653,681.73
  5. Step 5: Solve for x
    x = 324,653,681.73/28,621.76
  6. Step 6: Final answer
    x = 11,342.90

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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.