Home / 13,521.55-20,289.59-5,629.52

Finding the Fourth Proportional to 13,521.55, 20,289.59 and 5,629.52

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Solution

The fourth proportional to 13,521.55, 20,289.59 and 5,629.52 is: 8,447.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.55 : 20,289.59 = 5,629.52 : x
  2. Step 2: Convert to fraction form
    13,521.55/20,289.59 = 5,629.52/x
  3. Step 3: Cross multiply
    13,521.55x = 20,289.59 × 5,629.52
  4. Step 4: Simplify right side
    13,521.55x = 114,220,551.25
  5. Step 5: Solve for x
    x = 114,220,551.25/13,521.55
  6. Step 6: Final answer
    x = 8,447.30

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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.