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Finding the Fourth Proportional to 28,980, 43,476.12 and 9,260.64

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Solution

The fourth proportional to 28,980, 43,476.12 and 9,260.64 is: 13,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980 : 43,476.12 = 9,260.64 : x
  2. Step 2: Convert to fraction form
    28,980/43,476.12 = 9,260.64/x
  3. Step 3: Cross multiply
    28,980x = 43,476.12 × 9,260.64
  4. Step 4: Simplify right side
    28,980x = 402,616,695.92
  5. Step 5: Solve for x
    x = 402,616,695.92/28,980
  6. Step 6: Final answer
    x = 13,892.92

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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.