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Finding the Fourth Proportional to 19,860.84, 27,412.56 and 13,497.84

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Solution

The fourth proportional to 19,860.84, 27,412.56 and 13,497.84 is: 18,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.84 : 27,412.56 = 13,497.84 : x
  2. Step 2: Convert to fraction form
    19,860.84/27,412.56 = 13,497.84/x
  3. Step 3: Cross multiply
    19,860.84x = 27,412.56 × 13,497.84
  4. Step 4: Simplify right side
    19,860.84x = 370,010,348.87
  5. Step 5: Solve for x
    x = 370,010,348.87/19,860.84
  6. Step 6: Final answer
    x = 18,630.15

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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.