Home / 19,725.14-27,220.76-12,651.60

Finding the Fourth Proportional to 19,725.14, 27,220.76 and 12,651.60

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Solution

The fourth proportional to 19,725.14, 27,220.76 and 12,651.60 is: 17,459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,725.14 : 27,220.76 = 12,651.60 : x
  2. Step 2: Convert to fraction form
    19,725.14/27,220.76 = 12,651.60/x
  3. Step 3: Cross multiply
    19,725.14x = 27,220.76 × 12,651.60
  4. Step 4: Simplify right side
    19,725.14x = 344,386,167.22
  5. Step 5: Solve for x
    x = 344,386,167.22/19,725.14
  6. Step 6: Final answer
    x = 17,459.25

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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.