Home / 19,661.04-27,129.12-11,275.92

Finding the Fourth Proportional to 19,661.04, 27,129.12 and 11,275.92

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Solution

The fourth proportional to 19,661.04, 27,129.12 and 11,275.92 is: 15,558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.04 : 27,129.12 = 11,275.92 : x
  2. Step 2: Convert to fraction form
    19,661.04/27,129.12 = 11,275.92/x
  3. Step 3: Cross multiply
    19,661.04x = 27,129.12 × 11,275.92
  4. Step 4: Simplify right side
    19,661.04x = 305,905,786.79
  5. Step 5: Solve for x
    x = 305,905,786.79/19,661.04
  6. Step 6: Final answer
    x = 15,558.98

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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.