Home / 12,240.05-18,368.24-7,860.65

Finding the Fourth Proportional to 12,240.05, 18,368.24 and 7,860.65

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Solution

The fourth proportional to 12,240.05, 18,368.24 and 7,860.65 is: 11,796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.05 : 18,368.24 = 7,860.65 : x
  2. Step 2: Convert to fraction form
    12,240.05/18,368.24 = 7,860.65/x
  3. Step 3: Cross multiply
    12,240.05x = 18,368.24 × 7,860.65
  4. Step 4: Simplify right side
    12,240.05x = 144,386,174.61
  5. Step 5: Solve for x
    x = 144,386,174.61/12,240.05
  6. Step 6: Final answer
    x = 11,796.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.