Home / 19,681.49-27,160.97-12,132.81

Finding the Fourth Proportional to 19,681.49, 27,160.97 and 12,132.81

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Solution

The fourth proportional to 19,681.49, 27,160.97 and 12,132.81 is: 16,743.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.49 : 27,160.97 = 12,132.81 : x
  2. Step 2: Convert to fraction form
    19,681.49/27,160.97 = 12,132.81/x
  3. Step 3: Cross multiply
    19,681.49x = 27,160.97 × 12,132.81
  4. Step 4: Simplify right side
    19,681.49x = 329,538,827.76
  5. Step 5: Solve for x
    x = 329,538,827.76/19,681.49
  6. Step 6: Final answer
    x = 16,743.59

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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.