Home / 28,502.84-42,754.37-8,781.30

Finding the Fourth Proportional to 28,502.84, 42,754.37 and 8,781.30

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Solution

The fourth proportional to 28,502.84, 42,754.37 and 8,781.30 is: 13,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.84 : 42,754.37 = 8,781.30 : x
  2. Step 2: Convert to fraction form
    28,502.84/42,754.37 = 8,781.30/x
  3. Step 3: Cross multiply
    28,502.84x = 42,754.37 × 8,781.30
  4. Step 4: Simplify right side
    28,502.84x = 375,438,905.37
  5. Step 5: Solve for x
    x = 375,438,905.37/28,502.84
  6. Step 6: Final answer
    x = 13,171.98

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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.