Home / 21,345.05-29,453.45-11,914.01

Finding the Fourth Proportional to 21,345.05, 29,453.45 and 11,914.01

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Solution

The fourth proportional to 21,345.05, 29,453.45 and 11,914.01 is: 16,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.05 : 29,453.45 = 11,914.01 : x
  2. Step 2: Convert to fraction form
    21,345.05/29,453.45 = 11,914.01/x
  3. Step 3: Cross multiply
    21,345.05x = 29,453.45 × 11,914.01
  4. Step 4: Simplify right side
    21,345.05x = 350,908,594.42
  5. Step 5: Solve for x
    x = 350,908,594.42/21,345.05
  6. Step 6: Final answer
    x = 16,439.81

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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.