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Finding the Fourth Proportional to 14,828.32, 20,470.49 and 8,539.48

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Solution

The fourth proportional to 14,828.32, 20,470.49 and 8,539.48 is: 11,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,828.32 : 20,470.49 = 8,539.48 : x
  2. Step 2: Convert to fraction form
    14,828.32/20,470.49 = 8,539.48/x
  3. Step 3: Cross multiply
    14,828.32x = 20,470.49 × 8,539.48
  4. Step 4: Simplify right side
    14,828.32x = 174,807,339.95
  5. Step 5: Solve for x
    x = 174,807,339.95/14,828.32
  6. Step 6: Final answer
    x = 11,788.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.