Home / 14,714.51-20,286.15-9,990.59

Finding the Fourth Proportional to 14,714.51, 20,286.15 and 9,990.59

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Solution

The fourth proportional to 14,714.51, 20,286.15 and 9,990.59 is: 13,773.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,714.51 : 20,286.15 = 9,990.59 : x
  2. Step 2: Convert to fraction form
    14,714.51/20,286.15 = 9,990.59/x
  3. Step 3: Cross multiply
    14,714.51x = 20,286.15 × 9,990.59
  4. Step 4: Simplify right side
    14,714.51x = 202,670,607.33
  5. Step 5: Solve for x
    x = 202,670,607.33/14,714.51
  6. Step 6: Final answer
    x = 13,773.52

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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.