Home / 20,497.60-28,297.35-13,818.34

Finding the Fourth Proportional to 20,497.60, 28,297.35 and 13,818.34

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Solution

The fourth proportional to 20,497.60, 28,297.35 and 13,818.34 is: 19,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.60 : 28,297.35 = 13,818.34 : x
  2. Step 2: Convert to fraction form
    20,497.60/28,297.35 = 13,818.34/x
  3. Step 3: Cross multiply
    20,497.60x = 28,297.35 × 13,818.34
  4. Step 4: Simplify right side
    20,497.60x = 391,022,403.40
  5. Step 5: Solve for x
    x = 391,022,403.40/20,497.60
  6. Step 6: Final answer
    x = 19,076.50

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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.