Home / 21,929.07-30,261.70-13,429.84

Finding the Fourth Proportional to 21,929.07, 30,261.70 and 13,429.84

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Solution

The fourth proportional to 21,929.07, 30,261.70 and 13,429.84 is: 18,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.07 : 30,261.70 = 13,429.84 : x
  2. Step 2: Convert to fraction form
    21,929.07/30,261.70 = 13,429.84/x
  3. Step 3: Cross multiply
    21,929.07x = 30,261.70 × 13,429.84
  4. Step 4: Simplify right side
    21,929.07x = 406,409,789.13
  5. Step 5: Solve for x
    x = 406,409,789.13/21,929.07
  6. Step 6: Final answer
    x = 18,532.92

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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.