Home / 13,426.68-20,109.33-6,411.60

Finding the Fourth Proportional to 13,426.68, 20,109.33 and 6,411.60

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Solution

The fourth proportional to 13,426.68, 20,109.33 and 6,411.60 is: 9,602.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.68 : 20,109.33 = 6,411.60 : x
  2. Step 2: Convert to fraction form
    13,426.68/20,109.33 = 6,411.60/x
  3. Step 3: Cross multiply
    13,426.68x = 20,109.33 × 6,411.60
  4. Step 4: Simplify right side
    13,426.68x = 128,933,054.54
  5. Step 5: Solve for x
    x = 128,933,054.54/13,426.68
  6. Step 6: Final answer
    x = 9,602.75

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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.