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Finding the Fourth Proportional to 21,879.71, 32,819.32 and 14,842.29

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Solution

The fourth proportional to 21,879.71, 32,819.32 and 14,842.29 is: 22,263.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.71 : 32,819.32 = 14,842.29 : x
  2. Step 2: Convert to fraction form
    21,879.71/32,819.32 = 14,842.29/x
  3. Step 3: Cross multiply
    21,879.71x = 32,819.32 × 14,842.29
  4. Step 4: Simplify right side
    21,879.71x = 487,113,865.04
  5. Step 5: Solve for x
    x = 487,113,865.04/21,879.71
  6. Step 6: Final answer
    x = 22,263.27

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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.