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Finding the Fourth Proportional to 13,714.76, 18,926.71 and 8,412.50

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Solution

The fourth proportional to 13,714.76, 18,926.71 and 8,412.50 is: 11,609.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.76 : 18,926.71 = 8,412.50 : x
  2. Step 2: Convert to fraction form
    13,714.76/18,926.71 = 8,412.50/x
  3. Step 3: Cross multiply
    13,714.76x = 18,926.71 × 8,412.50
  4. Step 4: Simplify right side
    13,714.76x = 159,220,947.88
  5. Step 5: Solve for x
    x = 159,220,947.88/13,714.76
  6. Step 6: Final answer
    x = 11,609.46

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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.