Home / 12,174.81-16,800.31-6,870.12

Finding the Fourth Proportional to 12,174.81, 16,800.31 and 6,870.12

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Solution

The fourth proportional to 12,174.81, 16,800.31 and 6,870.12 is: 9,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,174.81 : 16,800.31 = 6,870.12 : x
  2. Step 2: Convert to fraction form
    12,174.81/16,800.31 = 6,870.12/x
  3. Step 3: Cross multiply
    12,174.81x = 16,800.31 × 6,870.12
  4. Step 4: Simplify right side
    12,174.81x = 115,420,145.74
  5. Step 5: Solve for x
    x = 115,420,145.74/12,174.81
  6. Step 6: Final answer
    x = 9,480.24

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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.