Home / 19,681.56-27,171.86-12,964.73

Finding the Fourth Proportional to 19,681.56, 27,171.86 and 12,964.73

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Solution

The fourth proportional to 19,681.56, 27,171.86 and 12,964.73 is: 17,898.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.56 : 27,171.86 = 12,964.73 : x
  2. Step 2: Convert to fraction form
    19,681.56/27,171.86 = 12,964.73/x
  3. Step 3: Cross multiply
    19,681.56x = 27,171.86 × 12,964.73
  4. Step 4: Simplify right side
    19,681.56x = 352,275,627.81
  5. Step 5: Solve for x
    x = 352,275,627.81/19,681.56
  6. Step 6: Final answer
    x = 17,898.77

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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.