Home / 19,679.52-27,142.38-12,606.60

Finding the Fourth Proportional to 19,679.52, 27,142.38 and 12,606.60

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Solution

The fourth proportional to 19,679.52, 27,142.38 and 12,606.60 is: 17,387.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.52 : 27,142.38 = 12,606.60 : x
  2. Step 2: Convert to fraction form
    19,679.52/27,142.38 = 12,606.60/x
  3. Step 3: Cross multiply
    19,679.52x = 27,142.38 × 12,606.60
  4. Step 4: Simplify right side
    19,679.52x = 342,173,127.71
  5. Step 5: Solve for x
    x = 342,173,127.71/19,679.52
  6. Step 6: Final answer
    x = 17,387.27

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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.