Home / 10,645.11-15,956.87-5,090.31

Finding the Fourth Proportional to 10,645.11, 15,956.87 and 5,090.31

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Solution

The fourth proportional to 10,645.11, 15,956.87 and 5,090.31 is: 7,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,645.11 : 15,956.87 = 5,090.31 : x
  2. Step 2: Convert to fraction form
    10,645.11/15,956.87 = 5,090.31/x
  3. Step 3: Cross multiply
    10,645.11x = 15,956.87 × 5,090.31
  4. Step 4: Simplify right side
    10,645.11x = 81,225,389.48
  5. Step 5: Solve for x
    x = 81,225,389.48/10,645.11
  6. Step 6: Final answer
    x = 7,630.30

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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.