Home / 13,182.88-18,192.38-9,828.64

Finding the Fourth Proportional to 13,182.88, 18,192.38 and 9,828.64

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Solution

The fourth proportional to 13,182.88, 18,192.38 and 9,828.64 is: 13,563.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.88 : 18,192.38 = 9,828.64 : x
  2. Step 2: Convert to fraction form
    13,182.88/18,192.38 = 9,828.64/x
  3. Step 3: Cross multiply
    13,182.88x = 18,192.38 × 9,828.64
  4. Step 4: Simplify right side
    13,182.88x = 178,806,353.76
  5. Step 5: Solve for x
    x = 178,806,353.76/13,182.88
  6. Step 6: Final answer
    x = 13,563.53

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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.