Home / 19,720.14-27,213.86-12,646.59

Finding the Fourth Proportional to 19,720.14, 27,213.86 and 12,646.59

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Solution

The fourth proportional to 19,720.14, 27,213.86 and 12,646.59 is: 17,452.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.14 : 27,213.86 = 12,646.59 : x
  2. Step 2: Convert to fraction form
    19,720.14/27,213.86 = 12,646.59/x
  3. Step 3: Cross multiply
    19,720.14x = 27,213.86 × 12,646.59
  4. Step 4: Simplify right side
    19,720.14x = 344,162,529.74
  5. Step 5: Solve for x
    x = 344,162,529.74/19,720.14
  6. Step 6: Final answer
    x = 17,452.34

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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.