Home / 13,133.44-18,124.26-7,165.21

Finding the Fourth Proportional to 13,133.44, 18,124.26 and 7,165.21

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Solution

The fourth proportional to 13,133.44, 18,124.26 and 7,165.21 is: 9,888.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.44 : 18,124.26 = 7,165.21 : x
  2. Step 2: Convert to fraction form
    13,133.44/18,124.26 = 7,165.21/x
  3. Step 3: Cross multiply
    13,133.44x = 18,124.26 × 7,165.21
  4. Step 4: Simplify right side
    13,133.44x = 129,864,090.80
  5. Step 5: Solve for x
    x = 129,864,090.80/13,133.44
  6. Step 6: Final answer
    x = 9,888.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.