Home / 21,105,183.36-31,652,992.80-10,719,875.28

Finding the Fourth Proportional to 21,105,183.36, 31,652,992.80 and 10,719,875.28

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Solution

The fourth proportional to 21,105,183.36, 31,652,992.80 and 10,719,875.28 is: 16,077,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105,183.36 : 31,652,992.80 = 10,719,875.28 : x
  2. Step 2: Convert to fraction form
    21,105,183.36/31,652,992.80 = 10,719,875.28/x
  3. Step 3: Cross multiply
    21,105,183.36x = 31,652,992.80 × 10,719,875.28
  4. Step 4: Simplify right side
    21,105,183.36x = 339,316,135,054,738
  5. Step 5: Solve for x
    x = 339,316,135,054,738/21,105,183.36
  6. Step 6: Final answer
    x = 16,077,383.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.