Home / 14,714.88-20,283.48-9,990.96

Finding the Fourth Proportional to 14,714.88, 20,283.48 and 9,990.96

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Solution

The fourth proportional to 14,714.88, 20,283.48 and 9,990.96 is: 13,771.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,714.88 : 20,283.48 = 9,990.96 : x
  2. Step 2: Convert to fraction form
    14,714.88/20,283.48 = 9,990.96/x
  3. Step 3: Cross multiply
    14,714.88x = 20,283.48 × 9,990.96
  4. Step 4: Simplify right side
    14,714.88x = 202,651,437.34
  5. Step 5: Solve for x
    x = 202,651,437.34/14,714.88
  6. Step 6: Final answer
    x = 13,771.87

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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.