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Finding the Fourth Proportional to 16,879.04, 25,308 and 6,478.40

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Solution

The fourth proportional to 16,879.04, 25,308 and 6,478.40 is: 9,713.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.04 : 25,308 = 6,478.40 : x
  2. Step 2: Convert to fraction form
    16,879.04/25,308 = 6,478.40/x
  3. Step 3: Cross multiply
    16,879.04x = 25,308 × 6,478.40
  4. Step 4: Simplify right side
    16,879.04x = 163,955,347.20
  5. Step 5: Solve for x
    x = 163,955,347.20/16,879.04
  6. Step 6: Final answer
    x = 9,713.55

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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.