Home / 19,784.25-27,315.63-12,618.18

Finding the Fourth Proportional to 19,784.25, 27,315.63 and 12,618.18

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Solution

The fourth proportional to 19,784.25, 27,315.63 and 12,618.18 is: 17,421.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.25 : 27,315.63 = 12,618.18 : x
  2. Step 2: Convert to fraction form
    19,784.25/27,315.63 = 12,618.18/x
  3. Step 3: Cross multiply
    19,784.25x = 27,315.63 × 12,618.18
  4. Step 4: Simplify right side
    19,784.25x = 344,673,536.15
  5. Step 5: Solve for x
    x = 344,673,536.15/19,784.25
  6. Step 6: Final answer
    x = 17,421.61

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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.