Home / 20,431.10-30,631.06-10,564.08

Finding the Fourth Proportional to 20,431.10, 30,631.06 and 10,564.08

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Solution

The fourth proportional to 20,431.10, 30,631.06 and 10,564.08 is: 15,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.10 : 30,631.06 = 10,564.08 : x
  2. Step 2: Convert to fraction form
    20,431.10/30,631.06 = 10,564.08/x
  3. Step 3: Cross multiply
    20,431.10x = 30,631.06 × 10,564.08
  4. Step 4: Simplify right side
    20,431.10x = 323,588,968.32
  5. Step 5: Solve for x
    x = 323,588,968.32/20,431.10
  6. Step 6: Final answer
    x = 15,838.06

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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.