Home / 13,688.55-20,514.21-5,784.53

Finding the Fourth Proportional to 13,688.55, 20,514.21 and 5,784.53

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Solution

The fourth proportional to 13,688.55, 20,514.21 and 5,784.53 is: 8,668.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.55 : 20,514.21 = 5,784.53 : x
  2. Step 2: Convert to fraction form
    13,688.55/20,514.21 = 5,784.53/x
  3. Step 3: Cross multiply
    13,688.55x = 20,514.21 × 5,784.53
  4. Step 4: Simplify right side
    13,688.55x = 118,664,960.60
  5. Step 5: Solve for x
    x = 118,664,960.60/13,688.55
  6. Step 6: Final answer
    x = 8,668.92

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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.