Home / 12,200.05-16,829.57-7,421.45

Finding the Fourth Proportional to 12,200.05, 16,829.57 and 7,421.45

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Solution

The fourth proportional to 12,200.05, 16,829.57 and 7,421.45 is: 10,237.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.05 : 16,829.57 = 7,421.45 : x
  2. Step 2: Convert to fraction form
    12,200.05/16,829.57 = 7,421.45/x
  3. Step 3: Cross multiply
    12,200.05x = 16,829.57 × 7,421.45
  4. Step 4: Simplify right side
    12,200.05x = 124,899,812.28
  5. Step 5: Solve for x
    x = 124,899,812.28/12,200.05
  6. Step 6: Final answer
    x = 10,237.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.