Home / 10,400.80-15,570.60-6,493.36

Finding the Fourth Proportional to 10,400.80, 15,570.60 and 6,493.36

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Solution

The fourth proportional to 10,400.80, 15,570.60 and 6,493.36 is: 9,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400.80 : 15,570.60 = 6,493.36 : x
  2. Step 2: Convert to fraction form
    10,400.80/15,570.60 = 6,493.36/x
  3. Step 3: Cross multiply
    10,400.80x = 15,570.60 × 6,493.36
  4. Step 4: Simplify right side
    10,400.80x = 101,105,511.22
  5. Step 5: Solve for x
    x = 101,105,511.22/10,400.80
  6. Step 6: Final answer
    x = 9,720.94

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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.