Home / 19,667.21-27,140.80-10,714.78

Finding the Fourth Proportional to 19,667.21, 27,140.80 and 10,714.78

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Solution

The fourth proportional to 19,667.21, 27,140.80 and 10,714.78 is: 14,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,667.21 : 27,140.80 = 10,714.78 : x
  2. Step 2: Convert to fraction form
    19,667.21/27,140.80 = 10,714.78/x
  3. Step 3: Cross multiply
    19,667.21x = 27,140.80 × 10,714.78
  4. Step 4: Simplify right side
    19,667.21x = 290,807,701.02
  5. Step 5: Solve for x
    x = 290,807,701.02/19,667.21
  6. Step 6: Final answer
    x = 14,786.42

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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.