Home / 13,185.76-18,200.40-7,600.48

Finding the Fourth Proportional to 13,185.76, 18,200.40 and 7,600.48

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Solution

The fourth proportional to 13,185.76, 18,200.40 and 7,600.48 is: 10,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.76 : 18,200.40 = 7,600.48 : x
  2. Step 2: Convert to fraction form
    13,185.76/18,200.40 = 7,600.48/x
  3. Step 3: Cross multiply
    13,185.76x = 18,200.40 × 7,600.48
  4. Step 4: Simplify right side
    13,185.76x = 138,331,776.19
  5. Step 5: Solve for x
    x = 138,331,776.19/13,185.76
  6. Step 6: Final answer
    x = 10,491.00

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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.