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Finding the Fourth Proportional to 28,548.13, 42,830.70 and 8,828.14

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Solution

The fourth proportional to 28,548.13, 42,830.70 and 8,828.14 is: 13,244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,548.13 : 42,830.70 = 8,828.14 : x
  2. Step 2: Convert to fraction form
    28,548.13/42,830.70 = 8,828.14/x
  3. Step 3: Cross multiply
    28,548.13x = 42,830.70 × 8,828.14
  4. Step 4: Simplify right side
    28,548.13x = 378,115,415.90
  5. Step 5: Solve for x
    x = 378,115,415.90/28,548.13
  6. Step 6: Final answer
    x = 13,244.84

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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.