Home / 13,525.12-20,287.88-3,665.40

Finding the Fourth Proportional to 13,525.12, 20,287.88 and 3,665.40

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Solution

The fourth proportional to 13,525.12, 20,287.88 and 3,665.40 is: 5,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.12 : 20,287.88 = 3,665.40 : x
  2. Step 2: Convert to fraction form
    13,525.12/20,287.88 = 3,665.40/x
  3. Step 3: Cross multiply
    13,525.12x = 20,287.88 × 3,665.40
  4. Step 4: Simplify right side
    13,525.12x = 74,363,195.35
  5. Step 5: Solve for x
    x = 74,363,195.35/13,525.12
  6. Step 6: Final answer
    x = 5,498.15

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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.