Home / 13,200.41-19,663.09-12,499.20

Finding the Fourth Proportional to 13,200.41, 19,663.09 and 12,499.20

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Solution

The fourth proportional to 13,200.41, 19,663.09 and 12,499.20 is: 18,618.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.41 : 19,663.09 = 12,499.20 : x
  2. Step 2: Convert to fraction form
    13,200.41/19,663.09 = 12,499.20/x
  3. Step 3: Cross multiply
    13,200.41x = 19,663.09 × 12,499.20
  4. Step 4: Simplify right side
    13,200.41x = 245,772,863.28
  5. Step 5: Solve for x
    x = 245,772,863.28/13,200.41
  6. Step 6: Final answer
    x = 18,618.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.