Home / 21,996.36-30,341.39-13,499.87

Finding the Fourth Proportional to 21,996.36, 30,341.39 and 13,499.87

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Solution

The fourth proportional to 21,996.36, 30,341.39 and 13,499.87 is: 18,621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.36 : 30,341.39 = 13,499.87 : x
  2. Step 2: Convert to fraction form
    21,996.36/30,341.39 = 13,499.87/x
  3. Step 3: Cross multiply
    21,996.36x = 30,341.39 × 13,499.87
  4. Step 4: Simplify right side
    21,996.36x = 409,604,601.41
  5. Step 5: Solve for x
    x = 409,604,601.41/21,996.36
  6. Step 6: Final answer
    x = 18,621.47

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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.