Home / 10,500.45-15,740.64-7,387.62

Finding the Fourth Proportional to 10,500.45, 15,740.64 and 7,387.62

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Solution

The fourth proportional to 10,500.45, 15,740.64 and 7,387.62 is: 11,074.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.45 : 15,740.64 = 7,387.62 : x
  2. Step 2: Convert to fraction form
    10,500.45/15,740.64 = 7,387.62/x
  3. Step 3: Cross multiply
    10,500.45x = 15,740.64 × 7,387.62
  4. Step 4: Simplify right side
    10,500.45x = 116,285,866.88
  5. Step 5: Solve for x
    x = 116,285,866.88/10,500.45
  6. Step 6: Final answer
    x = 11,074.37

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1.5x scale

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.