Home / 13,133.88-18,124.56-7,165.44

Finding the Fourth Proportional to 13,133.88, 18,124.56 and 7,165.44

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Solution

The fourth proportional to 13,133.88, 18,124.56 and 7,165.44 is: 9,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.88 : 18,124.56 = 7,165.44 : x
  2. Step 2: Convert to fraction form
    13,133.88/18,124.56 = 7,165.44/x
  3. Step 3: Cross multiply
    13,133.88x = 18,124.56 × 7,165.44
  4. Step 4: Simplify right side
    13,133.88x = 129,870,447.21
  5. Step 5: Solve for x
    x = 129,870,447.21/13,133.88
  6. Step 6: Final answer
    x = 9,888.20

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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.