Home / 13,530.76-20,286.90-4,643.72

Finding the Fourth Proportional to 13,530.76, 20,286.90 and 4,643.72

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Solution

The fourth proportional to 13,530.76, 20,286.90 and 4,643.72 is: 6,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.76 : 20,286.90 = 4,643.72 : x
  2. Step 2: Convert to fraction form
    13,530.76/20,286.90 = 4,643.72/x
  3. Step 3: Cross multiply
    13,530.76x = 20,286.90 × 4,643.72
  4. Step 4: Simplify right side
    13,530.76x = 94,206,683.27
  5. Step 5: Solve for x
    x = 94,206,683.27/13,530.76
  6. Step 6: Final answer
    x = 6,962.41

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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.