Home / 10,380.67-15,570.91-2,985.10

Finding the Fourth Proportional to 10,380.67, 15,570.91 and 2,985.10

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Solution

The fourth proportional to 10,380.67, 15,570.91 and 2,985.10 is: 4,477.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.67 : 15,570.91 = 2,985.10 : x
  2. Step 2: Convert to fraction form
    10,380.67/15,570.91 = 2,985.10/x
  3. Step 3: Cross multiply
    10,380.67x = 15,570.91 × 2,985.10
  4. Step 4: Simplify right side
    10,380.67x = 46,480,723.44
  5. Step 5: Solve for x
    x = 46,480,723.44/10,380.67
  6. Step 6: Final answer
    x = 4,477.62

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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.