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Finding the Fourth Proportional to 19,572.88, 27,009.72 and 11,189.92

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Solution

The fourth proportional to 19,572.88, 27,009.72 and 11,189.92 is: 15,441.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,572.88 : 27,009.72 = 11,189.92 : x
  2. Step 2: Convert to fraction form
    19,572.88/27,009.72 = 11,189.92/x
  3. Step 3: Cross multiply
    19,572.88x = 27,009.72 × 11,189.92
  4. Step 4: Simplify right side
    19,572.88x = 302,236,606.02
  5. Step 5: Solve for x
    x = 302,236,606.02/19,572.88
  6. Step 6: Final answer
    x = 15,441.60

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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.