Home / 12,123.14-16,730.16-7,087.80

Finding the Fourth Proportional to 12,123.14, 16,730.16 and 7,087.80

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Solution

The fourth proportional to 12,123.14, 16,730.16 and 7,087.80 is: 9,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.14 : 16,730.16 = 7,087.80 : x
  2. Step 2: Convert to fraction form
    12,123.14/16,730.16 = 7,087.80/x
  3. Step 3: Cross multiply
    12,123.14x = 16,730.16 × 7,087.80
  4. Step 4: Simplify right side
    12,123.14x = 118,580,028.05
  5. Step 5: Solve for x
    x = 118,580,028.05/12,123.14
  6. Step 6: Final answer
    x = 9,781.30

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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.