Home / 10,913.33-16,390.77-6,782.21

Finding the Fourth Proportional to 10,913.33, 16,390.77 and 6,782.21

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Solution

The fourth proportional to 10,913.33, 16,390.77 and 6,782.21 is: 10,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.33 : 16,390.77 = 6,782.21 : x
  2. Step 2: Convert to fraction form
    10,913.33/16,390.77 = 6,782.21/x
  3. Step 3: Cross multiply
    10,913.33x = 16,390.77 × 6,782.21
  4. Step 4: Simplify right side
    10,913.33x = 111,165,598.28
  5. Step 5: Solve for x
    x = 111,165,598.28/10,913.33
  6. Step 6: Final answer
    x = 10,186.22

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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.