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Finding the Fourth Proportional to 18,565.40, 27,848.16 and 4,714.40

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Solution

The fourth proportional to 18,565.40, 27,848.16 and 4,714.40 is: 7,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.40 : 27,848.16 = 4,714.40 : x
  2. Step 2: Convert to fraction form
    18,565.40/27,848.16 = 4,714.40/x
  3. Step 3: Cross multiply
    18,565.40x = 27,848.16 × 4,714.40
  4. Step 4: Simplify right side
    18,565.40x = 131,287,365.50
  5. Step 5: Solve for x
    x = 131,287,365.50/18,565.40
  6. Step 6: Final answer
    x = 7,071.62

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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.