Home / 21,679.84-29,918.08-11,743.84

Finding the Fourth Proportional to 21,679.84, 29,918.08 and 11,743.84

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Solution

The fourth proportional to 21,679.84, 29,918.08 and 11,743.84 is: 16,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.84 : 29,918.08 = 11,743.84 : x
  2. Step 2: Convert to fraction form
    21,679.84/29,918.08 = 11,743.84/x
  3. Step 3: Cross multiply
    21,679.84x = 29,918.08 × 11,743.84
  4. Step 4: Simplify right side
    21,679.84x = 351,353,144.63
  5. Step 5: Solve for x
    x = 351,353,144.63/21,679.84
  6. Step 6: Final answer
    x = 16,206.45

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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.