Home / 12,125.77-16,735.61-7,020.54

Finding the Fourth Proportional to 12,125.77, 16,735.61 and 7,020.54

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Solution

The fourth proportional to 12,125.77, 16,735.61 and 7,020.54 is: 9,689.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.77 : 16,735.61 = 7,020.54 : x
  2. Step 2: Convert to fraction form
    12,125.77/16,735.61 = 7,020.54/x
  3. Step 3: Cross multiply
    12,125.77x = 16,735.61 × 7,020.54
  4. Step 4: Simplify right side
    12,125.77x = 117,492,984.33
  5. Step 5: Solve for x
    x = 117,492,984.33/12,125.77
  6. Step 6: Final answer
    x = 9,689.53

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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.