Home / 13,509.25-20,286.29-8,347.93

Finding the Fourth Proportional to 13,509.25, 20,286.29 and 8,347.93

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Solution

The fourth proportional to 13,509.25, 20,286.29 and 8,347.93 is: 12,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.25 : 20,286.29 = 8,347.93 : x
  2. Step 2: Convert to fraction form
    13,509.25/20,286.29 = 8,347.93/x
  3. Step 3: Cross multiply
    13,509.25x = 20,286.29 × 8,347.93
  4. Step 4: Simplify right side
    13,509.25x = 169,348,528.88
  5. Step 5: Solve for x
    x = 169,348,528.88/13,509.25
  6. Step 6: Final answer
    x = 12,535.75

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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.