Home / 13,490.80-20,242.44-5,168.08

Finding the Fourth Proportional to 13,490.80, 20,242.44 and 5,168.08

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Solution

The fourth proportional to 13,490.80, 20,242.44 and 5,168.08 is: 7,754.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.80 : 20,242.44 = 5,168.08 : x
  2. Step 2: Convert to fraction form
    13,490.80/20,242.44 = 5,168.08/x
  3. Step 3: Cross multiply
    13,490.80x = 20,242.44 × 5,168.08
  4. Step 4: Simplify right side
    13,490.80x = 104,614,549.32
  5. Step 5: Solve for x
    x = 104,614,549.32/13,490.80
  6. Step 6: Final answer
    x = 7,754.51

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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.