Home / 14,991.48-20,689.56-8,705.88

Finding the Fourth Proportional to 14,991.48, 20,689.56 and 8,705.88

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Solution

The fourth proportional to 14,991.48, 20,689.56 and 8,705.88 is: 12,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.48 : 20,689.56 = 8,705.88 : x
  2. Step 2: Convert to fraction form
    14,991.48/20,689.56 = 8,705.88/x
  3. Step 3: Cross multiply
    14,991.48x = 20,689.56 × 8,705.88
  4. Step 4: Simplify right side
    14,991.48x = 180,120,826.61
  5. Step 5: Solve for x
    x = 180,120,826.61/14,991.48
  6. Step 6: Final answer
    x = 12,014.88

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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.