Home / 13,784.51-20,618.91-11,618.62

Finding the Fourth Proportional to 13,784.51, 20,618.91 and 11,618.62

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Solution

The fourth proportional to 13,784.51, 20,618.91 and 11,618.62 is: 17,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.51 : 20,618.91 = 11,618.62 : x
  2. Step 2: Convert to fraction form
    13,784.51/20,618.91 = 11,618.62/x
  3. Step 3: Cross multiply
    13,784.51x = 20,618.91 × 11,618.62
  4. Step 4: Simplify right side
    13,784.51x = 239,563,228.56
  5. Step 5: Solve for x
    x = 239,563,228.56/13,784.51
  6. Step 6: Final answer
    x = 17,379.16

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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.