Home / 13,701.04-18,905.40-8,320.68

Finding the Fourth Proportional to 13,701.04, 18,905.40 and 8,320.68

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Solution

The fourth proportional to 13,701.04, 18,905.40 and 8,320.68 is: 11,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.04 : 18,905.40 = 8,320.68 : x
  2. Step 2: Convert to fraction form
    13,701.04/18,905.40 = 8,320.68/x
  3. Step 3: Cross multiply
    13,701.04x = 18,905.40 × 8,320.68
  4. Step 4: Simplify right side
    13,701.04x = 157,305,783.67
  5. Step 5: Solve for x
    x = 157,305,783.67/13,701.04
  6. Step 6: Final answer
    x = 11,481.30

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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.