Home / 10,933.80-16,400.70-7,240.20

Finding the Fourth Proportional to 10,933.80, 16,400.70 and 7,240.20

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Solution

The fourth proportional to 10,933.80, 16,400.70 and 7,240.20 is: 10,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,933.80 : 16,400.70 = 7,240.20 : x
  2. Step 2: Convert to fraction form
    10,933.80/16,400.70 = 7,240.20/x
  3. Step 3: Cross multiply
    10,933.80x = 16,400.70 × 7,240.20
  4. Step 4: Simplify right side
    10,933.80x = 118,744,348.14
  5. Step 5: Solve for x
    x = 118,744,348.14/10,933.80
  6. Step 6: Final answer
    x = 10,860.30

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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.