Home / 13,133.57-18,124.38-7,165.37

Finding the Fourth Proportional to 13,133.57, 18,124.38 and 7,165.37

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Solution

The fourth proportional to 13,133.57, 18,124.38 and 7,165.37 is: 9,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.57 : 18,124.38 = 7,165.37 : x
  2. Step 2: Convert to fraction form
    13,133.57/18,124.38 = 7,165.37/x
  3. Step 3: Cross multiply
    13,133.57x = 18,124.38 × 7,165.37
  4. Step 4: Simplify right side
    13,133.57x = 129,867,888.72
  5. Step 5: Solve for x
    x = 129,867,888.72/13,133.57
  6. Step 6: Final answer
    x = 9,888.24

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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.