Home / 13,998.60-20,969.52-6,491.58

Finding the Fourth Proportional to 13,998.60, 20,969.52 and 6,491.58

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Solution

The fourth proportional to 13,998.60, 20,969.52 and 6,491.58 is: 9,724.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.60 : 20,969.52 = 6,491.58 : x
  2. Step 2: Convert to fraction form
    13,998.60/20,969.52 = 6,491.58/x
  3. Step 3: Cross multiply
    13,998.60x = 20,969.52 × 6,491.58
  4. Step 4: Simplify right side
    13,998.60x = 136,125,316.64
  5. Step 5: Solve for x
    x = 136,125,316.64/13,998.60
  6. Step 6: Final answer
    x = 9,724.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.