Home / 12,120.48-16,735.95-7,873.65

Finding the Fourth Proportional to 12,120.48, 16,735.95 and 7,873.65

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Solution

The fourth proportional to 12,120.48, 16,735.95 and 7,873.65 is: 10,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.48 : 16,735.95 = 7,873.65 : x
  2. Step 2: Convert to fraction form
    12,120.48/16,735.95 = 7,873.65/x
  3. Step 3: Cross multiply
    12,120.48x = 16,735.95 × 7,873.65
  4. Step 4: Simplify right side
    12,120.48x = 131,773,012.72
  5. Step 5: Solve for x
    x = 131,773,012.72/12,120.48
  6. Step 6: Final answer
    x = 10,871.93

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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.