Home / 13,415.02-20,121.58-3,554.08

Finding the Fourth Proportional to 13,415.02, 20,121.58 and 3,554.08

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Solution

The fourth proportional to 13,415.02, 20,121.58 and 3,554.08 is: 5,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.02 : 20,121.58 = 3,554.08 : x
  2. Step 2: Convert to fraction form
    13,415.02/20,121.58 = 3,554.08/x
  3. Step 3: Cross multiply
    13,415.02x = 20,121.58 × 3,554.08
  4. Step 4: Simplify right side
    13,415.02x = 71,513,705.05
  5. Step 5: Solve for x
    x = 71,513,705.05/13,415.02
  6. Step 6: Final answer
    x = 5,330.87

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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.