Home / 14,991.12-20,687.40-8,276.34

Finding the Fourth Proportional to 14,991.12, 20,687.40 and 8,276.34

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Solution

The fourth proportional to 14,991.12, 20,687.40 and 8,276.34 is: 11,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.12 : 20,687.40 = 8,276.34 : x
  2. Step 2: Convert to fraction form
    14,991.12/20,687.40 = 8,276.34/x
  3. Step 3: Cross multiply
    14,991.12x = 20,687.40 × 8,276.34
  4. Step 4: Simplify right side
    14,991.12x = 171,215,956.12
  5. Step 5: Solve for x
    x = 171,215,956.12/14,991.12
  6. Step 6: Final answer
    x = 11,421.16

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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.